​ The information designer Nicholas Felton [former Facebook employee] likes data: the more data, the better. That’s why for a number of years, he has released a compilation of information that he has collected and analyzed about himself, including where he’s gone, the books he’s read and whom he’s talked to." A Life in Data: Nicholas Felton's Self-Surveillance By AXEL GERDAU  Page up'd 12-10-22​

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L&SS-IS

Wikipedia links -- 
23snaps Parents save photos, videos, measurements and stories of their children 2012 8tracks.com Streaming user-curated playlists Academia.edu Social networking site for academics/researchers September 2008 About.me Social networking site October 2009 AmikumuLanguage learners  is a cross-platform app for smartphones (Android and iOS) which can be used to find people nearby who speak or learn the same languages as the user 2017 Ask.fm is a question and answer/dating network launched in June 2010 aSmallWorld European jet set and social elite world-wide March 2004 Athlinks Running, Swimming 2001 Band Group communication, South Korea
 beBee is a business and employment-oriented online service that operates via a website. The platform allows businesses to post jobs and users to post their CVs and interests. The website also incorporates a microblogging and social aspects.
BigMuscle.com Physically fit gym guys
Biip.no Norwegian community.  BitClout Microblogging, cryptocurrence. BlackPlanet Black Americans. Blind Employees. Blogger Blog. Brainly is a company based in Kraków, Poland, with headquarters in New York City. It is a social learning platform where millions of students and educators solve their academic problems together. Busuu Language learning community. 
2001 Blogging community  11/24/05 Busuu Language learning community (headquartered in Madrid, Spain) 05/16/08 Buzznet Music and pop-culture 2005 CafeMom Mothers December 2006 Care2 Green living and social activism 1998 CaringBridge Not for profit providing free websites that connect family and friends during a serious health event, care and recovery 1997. Cellufun Mobile Social-network game. Chess.com Chess players. players. Classmates.com School, college, work and the military 1995 CouchSurfing Worldwide network for making connections between travelers and the communities they visit 2003 Crunchyroll Anime fans.  Crunchyroll Anime and forums. 2006 Cyworld Popular in South Korea 2008 
 DailyStrength Medical & emotional support community - Physical health, Mental health, Support groups 11/04/07 delicious Social bookmarking allowing users to locate and save websites that match their own interests September 2003 deviantART Art community 08/07/00Diaspora* Decentralized, privacy aware, general (open source)November 2010 didlr Drawing service 
Disaboom People with disabilities (Amputee, cerebral palsy, MS, and other disabilities) 
Dol2day Politic community, Social network, Internet radio (German-speaking countries) 
DontStayIn Clubbing (primarily UK) 
Draugiem.lv General (primarily LV, LT, HU) 
douban Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music. 2000[69]Elftown Community and wiki around Fantasy and sci-fi. 
Elixio Business executives jet set and global elite. July 2007 English, baby! Students and teachers of English as a second language 2000Epernicus For research scientistsn. eToro Social Investing, Finance May 2007 Experience Project Life experiences 
Exploroo Travel Social Networking. 
Facebook General: Photos, Videos, Blogs, Apps. February 2004Faceparty General. Popular UK. Faces.com Adult Social Network, Mainly UK & USA 2011 FilmAffinity Movies and TV Series 2002 Filmow Movies and TV Series 2009 FledgeWing Entrepreneural community targeted towards worldwide university students Flixster Movies 2007 Flickr Photo sharing, commenting, photography related networking, worldwide February 2004 Focus.com Business to Business, worldwide 2005Fotki Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration. October 1998 Fotolog Photoblogging. Popular in South America and Spain 2002 Foursquare Location based mobile social network 2009 Friendica Distributed, federated, privacy aware, open source, general 
Friends Reunited UK based. School, college, work, sport and streets July 2000 Friendster General. Popular in Southeast Asia. No longer popular in the western world2002 Frühstückstreff General July 2001 FuelmyblogBlogging community July 2007 FullCircle Geosocial networking and location-based services portal for mobile devices April 2009 Gaia Online Anime and games. Popular in USA, Canada and Europe. Moderately popular around Asia. GamerDNA Computer and video games 09/21/06Gapyear.com Travel social network July 1998 Gather.comArticle, picture, and video sharing, as well as group discussions Geni.com Families, genealogy 01/16/07 GetGlue Social network for entertainment 10/28/08 Gogoyoko Fair play in Music - Social networking site for musicians and music lovers 
Goodreads Library cataloging, book lovers December 2006 Goodwizz Social network with matchmaking and personality games to find new contacts. Global, based in France. October 2010 Google+ General 06/28/11GovLoop For people in and around government Grono.net Poland Habbo General for teens. Over 31 communities worldwide. Chat room and user profiles. August 2000 hi5General. Popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the USA. 2003 Hospitality Club Hospitality 
Hotlist Geo-Social Aggregator rooted in the concept of knowing where users' friends are, were, and will be. HR.com Social networking site for Human Resources professionals 1999 Hub Culture Global influencers focused on worth creation November 2002 Hyves General, mostly popular in the Netherlands. September 2004 IbiboTalent based social networking site that allows to promote one's self and also discover new talent. Most popular in India. Identi.ca Twitter-like service popular with hackers and software freedom advocates. 
Indaba Music Online collaboration for musicians, remix contests, and networking. Instagram A photo and video sharing site October 2010IRC-Galleria Finland italki.com Language learning social network. 100+ languages. Itsmy Mobile community worldwide, blogging, friends, personal TV- showsiWiW Hungary 04/14/02 Jaiku General. Microblogging. Owned by Google February 2006 Jiepang Location based mobile social network. In Chinese language 2010Kaixin001 General. In Simplified Chinese; caters for mainland China users 
Kiwibox General. 1999 Lafango Talent-Focused media sharing site 
LaiBhaari Marathi social networking 2010 Last.fm Music 2002 LibraryThing Book lovers 08/29/05 Lifeknot Shared interests, hobbies LinkedIn Business and professional networking May 2003LinkExpats Social networking website for expatriates. 100+ countries. Listography Lists. Autobiography 

LiveJournal Blogging. Popular in Russia and among the Russian-speaking diaspora abroad. 04/15/99 LivemochaOnline language learning Makeoutclub General 08/09/99 MEETin General Meetup (website) General. Used to plan offline meetings for people interested in various activities Meettheboss Business and Finance community, worldwide. mixi Japan 10/25/00MocoSpace mobile community, worldwide 2005 MOGMusic MouthShut.com Social Network, social media, consumer reviews Mubi Auteur cinema 
MyHeritage family-oriented social network service 
MyLife Locating friends and family, keeping in touch (formerly Reunion.com) 
My Opera Blogging, mobile blogging, photo sharing, connecting with friends, Opera Link and Opera Unite. 
Global Myspace General August 2003 Nasza-klasa.pl School, college and friends. Popular in Poland 
Netlog General. Popular in Europe, Turkey, the Arab World and Canada's Québec province. Formerly known as Facebox and Redbox.[212] 
Nexopia Canada. Notoverthehill.com For baby boomers and mature internet users age 40 and beyond. 
NGO Post Non-Profit news sharing and networking, mainly in India 
Ning Users create their own social websites and social networks 2005 (Networks 2007) Odnoklassniki Connect with old classmates. Popular in Russia and former Soviet republics 
Open Diary First online blogging community, founded in 1998 1998 Orkut General. Owned by Google Inc. Popular in India and Brazil.
PatientsLikeMe Online community for patients with life-changing illnesses to find other patients like them, share their data with others, and learn more about their condition to improve their outcome. 2006Partyflock Dutch virtual community for people interested in house music and other electronic dance music 11/10/01 Pingsta Collaborative platform for the world's Internetwork Experts 
Pinterest Online pinboard for organizing and sharing things you love 2011 Plaxo Aggregator 
Playfire Computer and video games 
Playlist.com General, Music 
Plurk Micro-blogging, RSS, updates. Very popular in Taiwan 
Poolwo Social networking site from India 01/07/14 Qapacity A business-oriented social networking site and a business directory.    
Qzone General. In Simplified Chinese; caters for mainland China users 
Raptr Video games 
Ravelry Knitting and crochet 
Renren Significant site in China. Was known as 校内 (Xiaonei) until August 2009. 
ReverbNation.com Social network for musician and bands 
Ryze Business 
ScienceStage Science-oriented multimedia platform and network for scientists 
Sgrouples General, with focus on privacy rights 05/16/12ShareTheMusic Music Community. Sharing and listening to music for free and legally 
Shelfari Books 10/11/06 Sina Weibo Social microblogging site in Mainland China. 08/14/09 Skoob Collaborative social network for Brazilian readers 2009 Skyrock Social Network in French-speaking world 
SocialVibe Social Network for Charity 
Sonico.com General. Popular in Latin America and Spanish and Portuguese speaking regions. 
SoundCloud Repository of original music pieces and networking. 
Spaces Russian Social Network targeted to mobile phone users 
Spring.me Social network for meeting people September 2013 Stage 32US-based social network and educational site for creative professionals in film, television and theater February 2012 Stickam Live video streaming and chat. 
StudiVZ University students, mostly in the German-speaking countries. School students and those out of education sign up via its partner sites schülerVZ and meinVZ. 
Students Circle Network A Social Network connecting students, teachers and institutions to course resources, study groups and learning spaces. December 2010 StumbleUpon Stumble through websites that match users' selected interests 
Tagged General. October 2004 Talkbiznow Business networking 
Taltopia Online artistic community 
Taringa! General (primarily Argentina) 
TeachStreet Education / Learning / Teaching - More than 400 subjects 
TermWiki Learning / Languages / Translation - 1.2m terms in more than 1300 subjects May 2010 The Sphere A Private Online Social Luxury Network with Exclusive Personalized Services December 2008TravBuddy.com Travel 2005 Travellerspoint Travel 2002 tribe.netGeneral 
Trombi.com French subsidiary of Classmates.com 
Tuenti Spanish-based university and High School social network. 
Tumblr Microblogging platform and Social Networking Website. 
Twitter General. Micro-blogging, RSS, updates 07/15/06 Tylted Mobile social game network[303] 2007 Vkontakte General, including music upload, listening and search. Popular in Russia and former Soviet republics. September 2006 Vampirefreaks.com Gothic and industrial subculture 1999 Viadeo Global Social Networking and Campus Networking available in English, French, German, Spanish, Italian and Portuguese 
Virb Social network that focuses heavily on artists, including musicians and photographers 2007 Vox Blogging 
Wattpad For readers and authors to interact & e-book sharing 
WAYN Travel and lifestyle May 2003 WeeWorld Teenagers - 9 to 17 
We Heart It Image-based social network focused on inspiration, expression and creativity 2008 Wellwer Community without borders, where sharing is everything. September 2011 WeOurFamily General with emphasis on privacy and security 
Wepolls.com Social polling network 
Wer-kennt-wen General 
weRead Books June 2007 Wiser.org Online community space for the social justice and environmental movement[326] April 2007 WooxieBlogging and micro-blogging 
WriteAPrisoner.com Site networking inmates, friends, family September 2000 Xanga Blogs and "metro" areas Unknown XING Business (primarily Europe (Germany, Austria, Switzerland)) 
Xt3 Catholic social networking, created for World Youth Day 2008 
Yammer Social networking for office colleagues 2008 Yelp, Inc. Local Business Review and Talk 
Zoo.gr Greek Web Meeting point 2004 Zooppa 

Source: Wikipedia.org


Social Media FAQ Sheet:
See how each one is doing

Source: Wikipedia - A List of virtual communities with more than 100 million active users


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