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</style><table class="infobox vcard"><caption class="infobox-title fn org">NK.pl</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><img src="./_assets_/0c70a452f799bfe840676ee341124611/Logo_NK.svg.png" decoding="async" width="250" height="250" class="mw-file-element" data-file-width="567" data-file-height="567" loading="lazy"></span></td></tr><tr><th scope="row" class="infobox-label">Type of business</th><td class="infobox-data category"><a href="Privately_held_company" title="Privately held company">Privately held company</a></td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Type of site</div></th><td class="infobox-data"><a href="Social_network" title="Social network">Social network</a></td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data">November&nbsp;11, 2006<span style="display:none">&nbsp;(<span class="bday dtstart published updated">2006-11-11</span>)</span></td></tr><tr><th scope="row" class="infobox-label"><a href="Dissolution_(law)" title="Dissolution (law)">Dissolved</a></th><td class="infobox-data">July&nbsp;27,&nbsp;2021<span style="display: none;">&nbsp;(<span class="dtend">2021-07-27</span>)</span></td></tr><tr><th scope="row" class="infobox-label">Owner</th><td class="infobox-data">Ringier Axel Springer Polska</td></tr><tr><th scope="row" class="infobox-label">URL</th><td class="infobox-data url"><span class="url"><a rel="nofollow" class="external text" href="http://www.nk.pl/">www<wbr>.nk<wbr>.pl</a></span></td></tr><tr><th scope="row" class="infobox-label">Registration</th><td class="infobox-data">Required</td></tr><tr><th scope="row" class="infobox-label">Current&nbsp;status</th><td class="infobox-data category">Defunct</td></tr></tbody></table>
<p><b>NK.pl</b>, formerly <b>Nasza-klasa.pl</b> (English: <i>Our-class.pl</i>), was a Polish school-based <a href="Social_networking_service" title="Social networking service">social networking service</a> used by alumni and students.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> NK.pl was owned and administered by Ringier Axel Springer Polska.<sup id="cite_ref-close_2-0" class="reference"><a href="#cite_note-close-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>
<p>NK.pl was launched on 11 November 2006 by <a href="Maciej_Popowicz" title="Maciej Popowicz">Maciej Popowicz</a>, Paweł Olchawa, Michał Bartoszkiewicz, and Łukasz Adziński, four college students studying computer science at the <a href="University_of_Wroc%C5%82aw" title="University of Wrocław">University of Wrocław</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The company was headquartered in <a href="Wroc%C5%82aw" title="Wrocław">Wrocław</a>, Poland, and its name came from the song "<i>Nasza Klasa</i>" by <a href="Jacek_Kaczmarski" title="Jacek Kaczmarski">Jacek Kaczmarski</a>.
</p><p>The website enjoyed success, and one 2009 study called it a "model example of the ‘<a href="Rags_to_riches" title="Rags to riches">rags to riches</a>’ ideal of an enterprise construed with no financial funding and no institutional support (neither from ASP/<a href="Internet_service_provider" title="Internet service provider">ISP corporations</a> nor from central/local administration)".<sup id="cite_ref-iisit_4-0" class="reference"><a href="#cite_note-iisit-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> In 2009, the service had 13.5 million active users.<sup id="cite_ref-portal_5-0" class="reference"><a href="#cite_note-portal-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> NK.pl then ranked among the top five websites used in Poland, behind Google.pl, <a href="Onet.pl" title="Onet.pl">Onet.pl</a>, and Wirtualna Polska, and it was visited by more than 50% of Polish Internet users each month (with 10% of the traffic coming from abroad).<sup id="cite_ref-iisit_4-1" class="reference"><a href="#cite_note-iisit-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>As of July 2009 86% of its users lived in Poland, according to <a href="Alexa_Internet" title="Alexa Internet">Alexa</a>. The site was also popular in Norway, where it was the fifth most popular social networking website in 2009.<sup id="cite_ref-bb_6-0" class="reference"><a href="#cite_note-bb-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> In June 2010, a rebranding and changes to terms of use demanding that users allow the portal to use their profile photo commercially along with select private information, triggered a mass exodus. As of August 2014 the number of registered users had plummeted to less than 7 million, with many users having switched to <a href="Facebook" title="Facebook">Facebook</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p><p>In November 2014 Ringier Axel Springer Polska signed agreement to buy NK.pl from Excolimp Investments.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p><p>On May 26, 2021, NK.pl announced its closure effective July 27 of the same year.<sup id="cite_ref-close_2-1" class="reference"><a href="#cite_note-close-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Services">Services</h2></div>
<p>Registered users could pick their school and graduation year. Users were also able to create personal pages with details about their life and past education.
</p><p>NK.pl offered a wide variety of <a href="Internet_privacy" title="Internet privacy">privacy</a> settings, additionally offering up-to-date advice and instructions about privacy on NK.pl as well as the portal.<sup id="cite_ref-Klasa_9-0" class="reference"><a href="#cite_note-Klasa-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> It had a trust and safety team that worked with law enforcement to resolve matters related to threatening and dangerous posts and other illegal activity.
</p><p>NK.pl also cooperated with childcare services, such as the Nobody's Children Foundation, which takes care of psychological needs and healthy mental development of children.<sup id="cite_ref-Klasa_9-1" class="reference"><a href="#cite_note-Klasa-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
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<ul><li><a href="Grono.net" title="Grono.net">Grono.net</a></li>
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<li><a href="Facebook" title="Facebook">Facebook</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
<div class="mw-references-wrap"><ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1333433106">
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</style><cite id="CITEREFUrszula" class="citation web cs1">Urszula, Jurgiel. <a rel="nofollow" class="external text" href="http://mastersofmedia.hum.uva.nl/2011/10/02/social-death-of-social-networks/">"Social death of social networks"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">4 April</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=Social+death+of+social+networks&amp;rft.aulast=Urszula&amp;rft.aufirst=Jurgiel&amp;rft_id=http%3A%2F%2Fmastersofmedia.hum.uva.nl%2F2011%2F10%2F02%2Fsocial-death-of-social-networks%2F&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
<li id="cite_note-close-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-close_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-close_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.onet.pl/informacje/onetwiadomosci/zamkniecie-serwisu-naszaklasapl/hrzlgp7,79cfc278">"Zamknięcie serwisu NaszaKlasa.pl"</a>. <i>wiadomosci.onet.pl</i>. Onet<span class="reference-accessdate">. Retrieved <span class="nowrap">27 May</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=wiadomosci.onet.pl&amp;rft.atitle=Zamkni%C4%99cie+serwisu+NaszaKlasa.pl&amp;rft_id=https%3A%2F%2Fwww.onet.pl%2Finformacje%2Fonetwiadomosci%2Fzamkniecie-serwisu-naszaklasapl%2Fhrzlgp7%2C79cfc278&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
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<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite id="CITEREFRadkowski2021" class="citation web cs1 cs1-prop-foreign-lang-source">Radkowski, Michał (28 July 2021). <a rel="nofollow" class="external text" href="https://www.wirtualnemedia.pl/artykul/koniec-nasza-klasa-znika-swojskie-medium-spolecznosciowe">"Po prawie 15 latach skończyła się historia Naszej Klasy. Znika "swojskie medium społecznościowe"<span class="cs1-kern-right"></span>"</a> [After almost 15 years, the story of Our Class is over. The "homely social media" is disappearinge] (in Polish). Wirtualne Media<span class="reference-accessdate">. Retrieved <span class="nowrap">2 February</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=Po+prawie+15+latach+sko%C5%84czy%C5%82a+si%C4%99+historia+Naszej+Klasy.+Znika+%22swojskie+medium+spo%C5%82eczno%C5%9Bciowe%22&amp;rft.pub=Wirtualne+Media&amp;rft.date=2021-07-28&amp;rft.aulast=Radkowski&amp;rft.aufirst=Micha%C5%82&amp;rft_id=https%3A%2F%2Fwww.wirtualnemedia.pl%2Fartykul%2Fkoniec-nasza-klasa-znika-swojskie-medium-spolecznosciowe&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
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<li id="cite_note-iisit-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-iisit_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-iisit_4-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFMalachowski2009" class="citation journal cs1">Malachowski, Andrzej (2009). <a rel="nofollow" class="external text" href="http://iisit.org/Vol6/IISITv6p365-372Malachowski614.pdf">"Phenomenon of Nasza klasa (Our Class) Polish social network site"</a> <span class="cs1-format">(PDF)</span>. <i>Issues in Informing Science and Information Technology</i>. <b>6</b>: 366. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.28945%2F1065">10.28945/1065</a></span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Issues+in+Informing+Science+and+Information+Technology&amp;rft.atitle=Phenomenon+of+Nasza+klasa+%28Our+Class%29+Polish+social+network+site&amp;rft.volume=6&amp;rft.pages=366&amp;rft.date=2009&amp;rft_id=info%3Adoi%2F10.28945%2F1065&amp;rft.aulast=Malachowski&amp;rft.aufirst=Andrzej&amp;rft_id=http%3A%2F%2Fiisit.org%2FVol6%2FIISITv6p365-372Malachowski614.pdf&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
<li id="cite_note-portal-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-portal_5-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFJan_Samołyk" class="citation web cs1">Jan Samołyk. <a rel="nofollow" class="external text" href="http://nk.pl/blog/portal/wpis/165">"NK gra z WOŚP!"</a>. NK.pl<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=NK+gra+z+WO%C5%9AP%21&amp;rft.pub=NK.pl&amp;rft.au=Jan+Samo%C5%82yk&amp;rft_id=http%3A%2F%2Fnk.pl%2Fblog%2Fportal%2Fwpis%2F165&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
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<li id="cite_note-bb-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-bb_6-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.bloomberg.com/ss/09/07/0715_social_networking_sites/17.htm">"World's Top Social Networking Sites"</a>. <i>Bloomberg Business</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2 February</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=Bloomberg+Business&amp;rft.atitle=World%27s+Top+Social+Networking+Sites&amp;rft_id=https%3A%2F%2Fwww.bloomberg.com%2Fss%2F09%2F07%2F0715_social_networking_sites%2F17.htm&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.se.pl/technologie/internet/nasza-klasa-jak-radzi-sobie-nk-w-erze-facebooka_416019.html">"Nasza Klasa. Jak radzi sobie NK w erze Facebooka?"</a>. <i>se.pl</i>. 6 August 2014.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=se.pl&amp;rft.atitle=Nasza+Klasa.+Jak+radzi+sobie+NK+w+erze+Facebooka%3F&amp;rft.date=2014-08-06&amp;rft_id=http%3A%2F%2Fwww.se.pl%2Ftechnologie%2Finternet%2Fnasza-klasa-jak-radzi-sobie-nk-w-erze-facebooka_416019.html&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://interaktywnie.com/biznes/newsy/portale/grupa-onet-pl-przejmuje-serwis-spolecznosciowy-nk-pl-po-co-249635">"Grupa Onet.pl przejmuje serwis społecznościowy NK.pl. Po co?"</a>. <i>interaktywnie.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2022-11-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=interaktywnie.com&amp;rft.atitle=Grupa+Onet.pl+przejmuje+serwis+spo%C5%82eczno%C5%9Bciowy+NK.pl.+Po+co%3F&amp;rft_id=https%3A%2F%2Finteraktywnie.com%2Fbiznes%2Fnewsy%2Fportale%2Fgrupa-onet-pl-przejmuje-serwis-spolecznosciowy-nk-pl-po-co-249635&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
<li id="cite_note-Klasa-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-Klasa_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Klasa_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://nk.pl/nk_policy">"Polityka Prywatności&nbsp;– Ogólne Standardy Ochrony"</a>. <i>NK.pl</i><span class="reference-accessdate">. Retrieved <span class="nowrap">4 April</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=NK.pl&amp;rft.atitle=Polityka+Prywatno%C5%9Bci+%E2%80%93+Og%C3%B3lne+Standardy+Ochrony&amp;rft_id=http%3A%2F%2Fnk.pl%2Fnk_policy&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988"></span></span>
</li>
</ol></div>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://nk.pl/">The official site of nk.pl</a></li>
<li><a rel="nofollow" class="external text" href="http://developers.nk.pl/wiki/Main_Page">Site for NK Developers</a></li></ul>
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</style><div id="Social_networking_services5792" style="font-size:114%;margin:0 4em"><a href="Social_networking_service" title="Social networking service">Social networking services</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="List_of_social_networking_services" title="List of social networking services">Personal</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="23snaps" title="23snaps">23snaps</a></li>
<li><a href="Amikumu" title="Amikumu">Amikumu</a></li>
<li><a href="Anobii" title="Anobii">anobii</a></li>
<li><a href="Are.na" title="Are.na">Are.na</a></li>
<li><a href="Badoo" title="Badoo">Badoo</a></li>
<li><a href="BeReal" title="BeReal">BeReal</a></li>
<li><a href="Bluesky" title="Bluesky">Bluesky</a></li>
<li><a href="BharatMatrimony" title="BharatMatrimony">BharatMatrimony</a></li>
<li><a href="Bondee" title="Bondee">Bondee</a></li>
<li><a href="Bumble" title="Bumble">Bumble</a></li>
<li><a href="Cara_(app)" title="Cara (app)">Cara</a></li>
<li><a href="Clapper_(service)" title="Clapper (service)">Clapper</a></li>
<li><a href="Clubhouse_(app)" title="Clubhouse (app)">Clubhouse</a></li>
<li><a href="Convoz" title="Convoz">Convoz</a></li>
<li><a href="Cyworld" title="Cyworld">Cyworld</a></li>
<li><a href="Diaspora_(social_network)" title="Diaspora (social network)">Diaspora</a></li>
<li><a href="Display_(social_network)" title="Display (social network)">display</a></li>
<li><a href="Douban" title="Douban">Douban</a></li>
<li><a href="Draugiem.lv" title="Draugiem.lv">Draugiem.lv</a></li>
<li><a href="Facebook" title="Facebook">Facebook</a></li>
<li><a href="Foursquare_City_Guide" title="Foursquare City Guide">Foursquare City Guide</a></li>
<li><a href="Foursquare_Swarm" title="Foursquare Swarm">Foursquare Swarm</a></li>
<li><a href="Friendica" title="Friendica">Friendica</a></li>
<li><a href="Gab_(social_network)" title="Gab (social network)">Gab</a></li>
<li><a href="Gapo" title="Gapo">Gapo</a></li>
<li><a href="Gas_(app)" title="Gas (app)">Gas</a></li>
<li><a href="Gettr" title="Gettr">Gettr</a></li>
<li><a href="GNU_social" title="GNU social">GNU social</a></li>
<li><a href="Hi5" title="Hi5">Hi5</a></li>
<li><a href="Hive_Social" title="Hive Social">Hive Social</a></li>
<li><a href="Idka" title="Idka">Idka</a></li>
<li><a href="Instagram" title="Instagram">Instagram</a></li>
<li><a href="IRC-Galleria" title="IRC-Galleria">IRC-Galleria</a></li>
<li><a href="Kuaishou" title="Kuaishou">Kuaishou</a></li>
<li><a href="Kumu_(social_network)" title="Kumu (social network)">Kumu</a></li>
<li><a href="Letterboxd" title="Letterboxd">Letterboxd</a></li>
<li><a href="Likee" title="Likee">Likee</a></li>
<li><a href="LiveJournal" title="LiveJournal">LiveJournal</a></li>
<li><a href="Jeevansathi.com" title="Jeevansathi.com">Jeevansathi.com</a></li>
<li><a href="Matrimony.com" title="Matrimony.com">Matrimony.com</a></li>
<li><a href="Marco_Polo_(app)" title="Marco Polo (app)">Marco Polo</a></li>
<li><a href="Mastodon_(social_network)" title="Mastodon (social network)">Mastodon</a></li>
<li><a href="The_Meet_Group" title="The Meet Group">The Meet Group</a></li>
<li><a href="Meetup" title="Meetup">Meetup</a></li>
<li><a href="MeWe" title="MeWe">MeWe</a></li>
<li><a href="Miaopai" title="Miaopai">Miaopai</a></li>
<li><a href="Micro.blog" title="Micro.blog">micro.blog</a></li>
<li><a href="Minds_(social_network)" title="Minds (social network)">Minds</a></li>
<li><a href="Misskey" title="Misskey">Misskey</a></li>
<li><a href="Mixi" title="Mixi">Mixi</a></li>
<li><a href="MX_Player#MX_TakaTak" title="MX Player">MX TakaTak</a></li>
<li><a href="My_World%40Mail.Ru" title="My World@Mail.Ru">My World@Mail.Ru</a></li>
<li><a href="Myspace" title="Myspace">Myspace</a></li>
<li><a href="Nextdoor" title="Nextdoor">Nextdoor</a></li>
<li><a href="Odnoklassniki" title="Odnoklassniki">Odnoklassniki</a></li>
<li><a href="Parler" title="Parler">Parler</a></li>
<li><a href="Pinterest" title="Pinterest">Pinterest</a></li>
<li><a href="Pixnet" title="Pixnet">Pixnet</a></li>
<li><a href="Pleroma_(software)" title="Pleroma (software)">Pleroma</a></li>
<li><a href="Plurk" title="Plurk">Plurk</a></li>
<li><a href="Promo.com" title="Promo.com">Promo.com</a></li>
<li><a href="Qzone" title="Qzone">Qzone</a></li>
<li><a href="Readgeek" title="Readgeek">Readgeek</a></li>
<li><a href="Xiaohongshu" title="Xiaohongshu">RedNote / Xiaohongshu</a></li>
<li><a href="Renren" title="Renren">Renren</a></li>
<li><a href="Seeking.com" title="Seeking.com">Seeking.com</a></li>
<li><a href="Shaadi.com" title="Shaadi.com">Shaadi.com</a></li>
<li><a href="ShareChat" title="ShareChat">ShareChat</a></li>
<li><a href="Snapchat" title="Snapchat">Snapchat</a></li>
<li><a href="Snow_(app)" title="Snow (app)">Snow</a></li>
<li><a href="Spaces_(social_network)" title="Spaces (social network)">Spaces</a></li>
<li><a href="Tagged_(website)" title="Tagged (website)">Tagged</a></li>
<li><a href="Tal_Canal" title="Tal Canal">Tal Canal</a></li>
<li><a href="Tastebuds.fm" title="Tastebuds.fm">Tastebuds.fm</a></li>
<li><a href="Tea_(app)" title="Tea (app)">Tea</a></li>
<li><a href="Tellonym" title="Tellonym">Tellonym</a></li>
<li><a href="Threads_(social_network)" title="Threads (social network)">Threads</a></li>
<li><a href="TikTok" title="TikTok">TikTok</a></li>
<li><a href="Tinder_(app)" title="Tinder (app)">Tinder</a></li>
<li><a href="Triller_(app)" title="Triller (app)">Triller</a></li>
<li><a href="Trust_Caf%C3%A9" title="Trust Café">Trust Café</a></li>
<li><a href="Truth_Social" title="Truth Social">Truth Social</a></li>
<li><a href="Tuenti" title="Tuenti">Tuenti</a></li>
<li><a href="Tumblr" title="Tumblr">Tumblr</a></li>
<li><a href="TV_Time" title="TV Time">TV Time</a></li>
<li><a href="Twitter" title="Twitter">Twitter/X</a></li>
<li><a href="Untappd" title="Untappd">Untappd</a></li>
<li><a href="UpScrolled" title="UpScrolled">UpScrolled</a></li>
<li><a href="Vero_(app)" title="Vero (app)">Vero</a></li>
<li><a href="VK_(service)" title="VK (service)">VK</a></li>
<li><a href="Weibo" title="Weibo">Weibo</a></li>
<li><a href="Whisper_(app)" title="Whisper (app)">Whisper</a></li>
<li><a href="Yik_Yak" title="Yik Yak">Yik Yak</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Professional_network_service" title="Professional network service">Professional</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Academia.edu" title="Academia.edu">Academia.edu</a></li>
<li><a href="Behance" title="Behance">Behance</a></li>
<li><a href="Brainly" title="Brainly">Brainly</a></li>
<li><a href="HCL_Connections" title="HCL Connections">HCL Connections</a></li>
<li><a href="LinkedIn" title="LinkedIn">LinkedIn</a></li>
<li><a href="Moodle" title="Moodle">Moodle</a></li>
<li><a href="ResearchGate" title="ResearchGate">ResearchGate</a></li>
<li><a href="Solaborate" title="Solaborate">Solaborate</a></li>
<li><a href="TradingView" title="TradingView">TradingView</a></li>
<li><a href="Viadeo" title="Viadeo">Viadeo</a></li>
<li><a href="Viva_Engage" title="Viva Engage">Viva Engage</a></li>
<li><a href="XING" title="XING">XING</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="List_of_defunct_social_networking_services" title="List of defunct social networking services">Defunct</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="App.net" title="App.net">App.net</a></li>
<li><a href="AsianAve" title="AsianAve">AsianAve</a></li>
<li><a href="Ask.fm" title="Ask.fm">Ask.fm</a></li>
<li><a href="Avatars_United" title="Avatars United">Avatars United</a></li>
<li><a href="Bebo" title="Bebo">Bebo</a></li>
<li><a href="Bolt_(website)" title="Bolt (website)">Bolt</a></li>
<li><a href="BranchOut" title="BranchOut">BranchOut</a></li>
<li><a href="Capazoo" title="Capazoo">Capazoo</a></li>
<li><a href="Cloob" title="Cloob">Cloob</a></li>
<li><a href="Cohost" title="Cohost">Cohost</a></li>
<li><a href="EConozco" title="EConozco">eConozco</a></li>
<li><a href="Edmodo" title="Edmodo">Edmodo</a></li>
<li><a href="Ello_(social_network)" title="Ello (social network)">Ello</a></li>
<li><a href="Emojli" title="Emojli">Emojli</a></li>
<li><a href="EWorld" title="EWorld">eWorld</a></li>
<li><a href="Eyegroove" title="Eyegroove">Eyegroove</a></li>
<li><a href="FitFinder" title="FitFinder">FitFinder</a></li>
<li><a href="FriendFeed" title="FriendFeed">FriendFeed</a></li>
<li><a href="Friends_Reunited" title="Friends Reunited">Friends Reunited</a></li>
<li><a href="Friendster" title="Friendster">Friendster</a></li>
<li><a href="Google%2B" title="Google+">Google+</a></li>
<li><a href="Google_Buzz" title="Google Buzz">Google Buzz</a></li>
<li><a href="Google_Currents_(social_app)" title="Google Currents (social app)">Google Currents</a></li>
<li><a href="Grono.net" title="Grono.net">Grono.net</a></li>
<li><a href="Heello" title="Heello">Heello</a></li>
<li><a href="Hello_(social_network)" title="Hello (social network)">Hello</a></li>
<li><a href="Highlight_(application)" title="Highlight (application)">Highlight</a></li>
<li><a href="Houseparty_(app)" title="Houseparty (app)">Houseparty</a></li>
<li><a href="Huddles_(app)" title="Huddles (app)">Huddles</a></li>
<li><a href="Hyves" title="Hyves">Hyves</a></li>
<li><a href="IdeaPlane" title="IdeaPlane">IdeaPlane</a></li>
<li><a href="IGTV" title="IGTV">IGTV</a></li>
<li><a href="ITunes_Ping" title="ITunes Ping">iTunes Ping</a></li>
<li><a href="IWiW" title="IWiW">iWiW</a></li>
<li><a href="Jaiku" title="Jaiku">Jaiku</a></li>
<li><a href="Keek" title="Keek">Keek</a></li>
<li><a href="Koo_(social_network)" title="Koo (social network)">Koo</a></li>
<li><a href="Lifeknot" title="Lifeknot">Lifeknot</a></li>
<li><a href="LunarStorm" title="LunarStorm">LunarStorm</a></li>
<li><a href="Me2day" title="Me2day">Me2day</a></li>
<li><a href="Meerkat_(app)" title="Meerkat (app)">Meerkat</a></li>
<li><a href="Miiverse" title="Miiverse">Miiverse</a></li>
<li><a href="MixBit" title="MixBit">MixBit</a></li>
<li><a href="Mobli" title="Mobli">Mobli</a></li>
<li><a href="Mugshot_(website)" title="Mugshot (website)">Mugshot</a></li>
<li><a href="Multiply_(website)" title="Multiply (website)">Multiply</a></li>
<li><a href="Musical.ly" title="Musical.ly">Musical.ly</a></li>
<li><a href="Natter_(social_network)" title="Natter (social network)">Natter</a></li>
<li><a href="Netlog" title="Netlog">Netlog</a></li>
<li><a class="mw-selflink selflink">NK.pl</a></li>
<li><a href="Orkut" title="Orkut">Orkut</a></li>
<li><a href="Path_(social_network)" title="Path (social network)">Path</a></li>
<li><a href="Peach_(social_network)" title="Peach (social network)">Peach</a></li>
<li><a href="Periscope_(service)" title="Periscope (service)">Periscope</a></li>
<li><a href="Pheed" title="Pheed">Pheed</a></li>
<li><a href="Piczo" title="Piczo">Piczo</a></li>
<li><a href="PlanetAll" title="PlanetAll">PlanetAll</a></li>
<li><a href="Posterous" title="Posterous">Posterous</a></li>
<li><a href="Pownce" title="Pownce">Pownce</a></li>
<li><a href="Qaiku" title="Qaiku">Qaiku</a></li>
<li><a href="Sciencescape" class="mw-redirect" title="Sciencescape">Sciencescape</a> (Meta<sup>α</sup>)</li>
<li><a href="SixDegrees.com" title="SixDegrees.com">SixDegrees.com</a></li>
<li><a href="Skyrock_(social_network_site)" title="Skyrock (social network site)">Skyrock</a></li>
<li><a href="So.cl" title="So.cl">So.cl</a></li>
<li><a href="Spotify_Live" title="Spotify Live">Spotify Live</a></li>
<li><a href="Spring.me" title="Spring.me">Spring.me</a></li>
<li><a href="Streetlife_(website)" title="Streetlife (website)">Streetlife</a></li>
<li><a href="StudiVZ" title="StudiVZ">StudiVZ</a></li>
<li><a href="Surfbook" title="Surfbook">Surfbook</a></li>
<li><a href="Talkbits" title="Talkbits">Talkbits</a></li>
<li><a href="Taringa!" title="Taringa!">Taringa!</a></li>
<li><a href="Tbh" title="Tbh">tbh</a></li>
<li><a href="Tea_Party_Community" title="Tea Party Community">Tea Party Community</a></li>
<li><a href="Third_Voice" title="Third Voice">Third Voice</a></li>
<li><a href="Tout_(company)" title="Tout (company)">Tout</a></li>
<li><a href="Tribe.net" title="Tribe.net">tribe.net</a></li>
<li><a href="Tvtag" title="Tvtag">tvtag</a></li>
<li><a href="Vine_(service)" title="Vine (service)">Vine</a></li>
<li><a href="Windows_Live_Spaces" title="Windows Live Spaces">Windows Live Spaces</a></li>
<li><a href="Wretch_(website)" title="Wretch (website)">Wretch</a></li>
<li><a href="Xanga" title="Xanga">Xanga</a></li>
<li><a href="Yahoo_360%C2%B0" title="Yahoo 360°">Yahoo! 360°</a></li>
<li><a href="Yahoo_Kickstart" title="Yahoo Kickstart">Yahoo! Kickstart</a></li>
<li><a href="Yahoo_Mash" title="Yahoo Mash">Yahoo! Mash</a></li>
<li><a href="Yahoo_Meme" title="Yahoo Meme">Yahoo! Meme</a></li>
<li><a href="Yo_(app)" title="Yo (app)">Yo</a></li>
<li><a href="Zune_Social" title="Zune Social">Zune Social</a></li>
<li><a href="ZunZuneo" title="ZunZuneo">ZunZuneo</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Services</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Comparison_of_social_networking_software" title="Comparison of social networking software">Software comparison</a></li>
<li><a href="Burned_Haystack_Dating_Method" title="Burned Haystack Dating Method">Burned Haystack Dating Method</a></li>
<li><a href="White-label_product" title="White-label product">White-label</a>
<ul><li><a href="Ning_(website)" title="Ning (website)">Ning</a></li>
<li><a href="Wall.fm" title="Wall.fm">Wall.fm</a></li></ul></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tools</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Social_network_analysis_software" title="Social network analysis software">Analysis software</a></li>
<li><a href="Diaspora_(social_network)" title="Diaspora (social network)">Diaspora</a></li>
<li><a href="Web_2.0_Suicide_Machine" title="Web 2.0 Suicide Machine">Web 2.0 Suicide Machine</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Attention_inequality" title="Attention inequality">Attention inequality</a></li>
<li><a href="Confessions_page" title="Confessions page">Confessions page</a></li>
<li><a href="Cybersectarianism" title="Cybersectarianism">Cybersectarianism</a></li>
<li><a href="Fediverse" title="Fediverse">Fediverse</a></li>
<li><a href="Online_identity" title="Online identity">Online identity</a></li>
<li><a href="Small-world_experiment" title="Small-world experiment">Small-world experiment</a></li>
<li><a href="Small-world_network" title="Small-world network">Small-world network</a></li>
<li><a href="Social_network" title="Social network">Social network</a></li>
<li><a href="Thirst_trap" title="Thirst trap">Thirst trap</a></li>
<li><a href="User_profile" title="User profile">User profile</a></li>
<li><a href="Virtual_community" title="Virtual community">Virtual community</a>
<ul><li><a href="List_of_virtual_communities_with_more_than_1_million_users" title="List of virtual communities with more than 1 million users">list</a></li></ul></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Hospitality_exchange_service" title="Hospitality exchange service">Hospitality exchange service</a></li>
<li><a href="Mobile_social_network" title="Mobile social network">Mobile</a></li>
<li><a href="Online_dating" title="Online dating">Online dating</a>
<ul><li><a href="Comparison_of_online_dating_services" title="Comparison of online dating services">comparison</a></li></ul></li>
<li><a href="Social_network_advertising" title="Social network advertising">Social network advertising</a></li>
<li><a href="Social_network_hosting_service" title="Social network hosting service">Social network hosting service</a></li>
<li><a href="Social_profiling" title="Social profiling">Social profiling</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="User_interface" title="User interface">User interface</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Activity_stream" title="Activity stream">Activity stream</a></li>
<li><a href="Brand_page" title="Brand page">Brand page</a></li>
<li><a href="Group_(online_social_networking)" title="Group (online social networking)">Groups</a></li>
<li><a href="Hashtag" title="Hashtag">Hashtag</a></li>
<li><a href="Like_button" title="Like button">Like button</a></li>
<li><a href="Online_petition" title="Online petition">Online petitions</a></li>
<li><a href="Open-access_poll" title="Open-access poll">Polling</a></li>
<li><a href="Reblogging" title="Reblogging">Reblogging</a></li>
<li><a href="Story_(social_media)" title="Story (social media)">Story</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Implications</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Issues_relating_to_social_networking_services" title="Issues relating to social networking services">Issues</a></li>
<li><a href="Privacy_concerns_with_social_networking_services" title="Privacy concerns with social networking services">Privacy concerns</a></li>
<li><a href="Problematic_social_media_use" title="Problematic social media use">Problematic social media use</a></li>
<li><a href="Use_of_social_network_websites_in_investigations" title="Use of social network websites in investigations">Use in investigations</a></li>
<li><a href="Social_media_use_in_politics" title="Social media use in politics">Use in politics</a></li>
<li><a href="Gender_differences_in_social_network_service_use" class="mw-redirect" title="Gender differences in social network service use">User gender differences</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Protocols</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="ActivityPub" title="ActivityPub">ActivityPub</a></li>
<li><a href="AT_Protocol" title="AT Protocol">AT Protocol</a></li>
<li><a href="Decentralized_Social_Networking_Protocol" class="mw-redirect" title="Decentralized Social Networking Protocol">Decentralized Social Networking Protocol</a></li>
<li><a href="Distributed_Social_Networking_Protocol" title="Distributed Social Networking Protocol">Distributed Social Networking Protocol</a> (defunct)</li>
<li><a href="Micropub_(protocol)" title="Micropub (protocol)">Micropub</a></li>
<li><a href="Nostr" title="Nostr">Nostr</a></li>
<li><a href="OpenSocial" title="OpenSocial">OpenSocial</a> (defunct)</li>
<li><a href="OStatus" title="OStatus">OStatus</a></li>
<li><a href="Pump.io" title="Pump.io">Pump.io</a></li>
<li><a href="XMPP" title="XMPP">XMPP</a></li></ul>
</div></td></tr></tbody></table></div></div><!--htdig_noindex--><div><div class="zim-footer">
    This article is issued from <a class="external text" title="Last edited on 2025-12-17" href="https://en.wikipedia.org/wiki/?title=NK.pl&amp;oldid=1328055790">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.
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