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Social networking is based on the concept of "six degrees of separation," wherein any two people can make contact by a chain of, at most, five mediators. This means that at any given time, each person in the world is connected through a link of five people, making social networking a very powerful tool for spreading or obtaining information.

Connections are made possible when a person starts to invite people as contacts. When the invited person accepts the request, the inviter can then invite the invitee's personal contacts, further expanding the network as the cycle continues. Through social networking, interrelated cyber communities can be created in order to help individuals find contacts that may be useful to them but otherwise may be very unlikely for them to meet. With the popularity of social networking sites, more and more people can become part of an online community. They will be able to make new friends as well as share their lives online from wherever they're located.

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What is a Social Network? - Definition from Techopedia

A short explanation of social networking websites and why they are popular.

This video introduces the basic ideas behind Social Networking. It focuses on the role of social networking in solving real-world problems. It teaches: The role of people networks in business and personal life The hidden nature of real-world people networks How social networking sites reveal hidden connections The basic features of social networking websites

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Original post:
Social Networking in Plain English

Networks get things done. Whether it's sending a letter or lighting your home. Networks make it happen.

To get from Chicago to Santa Fe, we need to see the network of roads that will get us there. We see that Chicago is connected to St Louis, which is connected to Dallas, which is connected to Santa Fe.

Of course, people networks can help us with finding jobs, meeting new friends, and finding partners. You know how it works. Bob is your friend, he knows Sally, and Sally's friend Joe has a job for you. This is a network of people - a social network. Yaaay!

The problem with social networks in the real world is that most of the connections between people are hidden. Your network may have huge potential, but it's only as valuable as the people and connections that you can see. Boooo!

This problem is being solved by a type of web site called a social networking site. These websites help you see connections that are hidden in the real world.

Here's how it works. You sign up for a free account and fill out your profile. Then, you look for people you know.

When you find someone, you click a button that says, "Add as Friend". Once you do this, you and that person have a connection on the website that others can see. They are a member of your network, and you are a member of theirs.

What's really cool, is that you can see who your friends know, and who your friends' friends know. You're no longer a stranger, so you can contact them more easily.

This solves a real world problem because your network has hidden opportunities. Social networking sites make these connections between people visible.

Like a map for a highway, they can show you the people network that can help you get to your next destination, whether it's a job, a new partner, or a great place to live. Your network is suddenly more useful.

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Social Networking Explained by Common Craft (VIDEO)

Essay samples by My essay writing.com

With the advancement in technology, communication has grown. It is now easier and cheap to communicate and connect with people across the world. The issue of distance is no longer an excuse for lack of communication. Communication systems have grown from wired devices to wireless devices. The internet has also brought adverse changes in the forms of communications that are available and currently being used. It has led the rise of social networks. Here you can communicate and share your thoughts with many people at the same time. It is easy to share information like pictures, advertisements, videos and text messages. To many people, it is perceived as a form of entertainment. However, being in social sites enhances communication. There are many types of social sites and it is on oneself to choose the one that they are comfortable with.

Social networks allow people to keep and manage accounts. This is an identity and you can custom it depending on how your target group knows you. This makes it easy for individuals to search for you and get you. You also have a choice to invite people to your account. This makes it easy to link with family members, friends, classmates and colleagues. Social sites allow for the creation of groups. This is based on the likeness of ideas and goals. This makes it easy to communicate with people you have a common goal. You can post important messages in the groups and every member can contribute their thoughts. Social media can be seen as a perfect replacement to conferencing. It is cheaper and though it may not allow for video calls, it gives a platform to post clips and photos.

Social Networking makes it possible to reach many people in a very short time. This has led to the creation of a site that is involved in helping the community. Sites like Linked are dedicated to helping those people who are hunting for jobs. Candidates create their resume and CVs and upload them to these sites. Employers just need to make a search of the qualifications that they are interested in. They can also advertise for jobs on these sites and be sure of getting highly qualified persons. Social sites have also been involved in social care by spreading the news in cases of danger. Messages on these sites get to many people in a very short time and this greatly helps in saving many people from potential danger.

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Social Networking: A Three-Paragraph Essay Example

NameDescription/focusDate launchedRegistered usersRegistrationGlobal Alexa page ranking43 ThingsGoal setting and achievement1 January 200570063000000000000003,000,000[1]Closed700412914000000000012,914[2]Academia.eduSocial networking site for academics/researchersSeptember 2008700718000000000000018,000,000[3]Open7002824000000000000824[4]About.meSocial networking siteOctober 200970065000000000000005,000,000[5]Open70031447000000000001,447AdvogatoFree and open source software developers1999700413575000000000013,575[6]Open7005292620000000000292,620[7]aNobiiBooks2006Open700426939000000000026,939[8]AsianAvenueA social network for the Asian American community1997Open7005170384000000000170,384[9]aSmallWorldEuropean jet set and social elite worldwideMarch 20047005550000000000000550,000[10]Invite-only7005580060000000000580,060[11]AthlinksRunning, swimming20017005139458000000000139,458[12]Open700469170000000000069,170[13]Audimated.comIndependent music2010Open7005656507000000000656,507[14]BeboGeneralJuly 20057008117000000000000117,000,000[15]Open to people 13 and older70034169000000000004,169[16]Biip.noNorwegian community1 June 20057005430000000000000430,000[17]Requires Norwegian phone number700481916000000000081,916[18]BlackPlanetBlack Americans1 September 1999700720000000000000020,000,000[19]Open70037193000000000007,193[20]Bolt.comGeneral1996Open7005589595000000000589,595[21]BusuuLanguage learning community (headquartered in Madrid, Spain)16 May 2008700712000000000000012,000,000[22]Open70034976000000000004,976[23]BuzznetMusic and pop-culture2005700710000000000000010,000,000[24]Open70036955000000000006,955[25]CafeMomMothersDecember 200670061250000000000001,250,000[26]Open to moms and moms-to-be70031293000000000001,293[27]Care2Green living and social activism199870069961947000000009,961,947[28]Open70031930000000000001,930[29]CaringBridgeNot for profit providing free websites that connect family and friends during a serious health event, care and recovery.[30]199770069500000000000009,500,000[31]Open to people 18 and older[32]70034279000000000004,279[33]Classmates.comSchool, college, work and the military1995700750000000000000050,000,000[34]Open to people 18 and older[35]70033284000000000003,284[36]CloobGeneral. Popular in Iran2004Open7002749000000000000749[37]CouchSurfingWorldwide network for making connections between travelers and the communities they visit.200370062967421000000002,967,421[38]Open70032231000000000002,231[39]CozyCotEast Asian and Southeast Asian women20017005150000000000000150,000[40]Open700436959000000000036,959[41]CrunchyrollAnime and forums.2006Open70035721000000000005,721[42]CucumbertownNetworking for cooks2012Open7005175796000000000175,796[43]CyworldGeneral. Popular in South Korea.1999700724000000000000024,000,000[44]Open70031616000000000001,616[45]DailyBoothPhoto-blogging site where users upload a photo every day13 February 2009Closed70035963000000000005,963[46]DailyStrengthMedical & emotional support community - physical health, mental health, support groups4 November 2007Open700410511000000000010,511[47]deliciousSocial bookmarking allowing users to locate and save websites that match their own interestsSeptember 200370068822921000000008,822,921[48]Open7002436000000000000436[49]DeviantArtArt community7 August 2000700726000000000000026,000,000[50]Open to people 13 and older7002131000000000000131[51]Diaspora*Decentralized, user-owned, open source, nonprofit, privacy aware, generalNovember 20107005669000000000000669,000+[n 1]OpenNA[n 2]DisaboomPeople with disabilities (amputees, cerebral palsy, MS, and other disabilities)2007Open7005218135000000000218,135[52]Dol2dayPolitic community, social network, Internet radio (German-speaking countries)15 May 2000700440200000000000040,200[53]Open7005385237000000000385,237[54]DontStayInClubbing (primarily UK)April 2003Open700486535000000000086,535[55]Draugiem.lvGeneral (primarily LV, LT, HU)April 24, 200470062600466000000002,600,466[56]Invitation only70032698000000000002,698[57]doubanChinese Web 2.0 website providing user review and recommendation services for movies, books, and music.2005700746850000000000046,850,000[58]Open7002106000000000000106[59]DoximityU.S. Physicians and medical doctors.20117005400000000000000400,000[60]U.S. physicians only700427539000000000027,539[61]DreamwidthBlogging.2009Open70036384000000000006,384[62]DXY.cnChinese online community for physicians, health care professionals, pharmacies and facilities2000[63]70062000000000000002,000,000[64]Open70038367000000000008,367[65]ElftownCommunity and wiki around fantasy and sci-fi.Feb 20027005185000000000000185,000[66]Open, approval needed700443277000000000043,277[67]ElloGeneralMarch 2014[68][69]Invite only while in beta7005106782000000000106,782[70]ElixioBusiness executives jet set and global elite.July 2007700480000000000000080,000[71]Invite-only7005545268000000000545,268[72]English, baby!Students and teachers of English as a second language200070061600000000000001,600,000[73]Open700429585000000000029,585[74]Eons.comFor baby boomers and mature internet users age 40 and beyond.Jul 2006Open to people age 40 years and older700473767000000000073,767[75]eToroSocial investing, financeMay 200770062500000000000002,500,000[citation needed]Open70031591000000000001,591[76]Experience ProjectLife experiences2007Open70032658000000000002,658[77]FacebookGeneral: photos, videos, blogs, apps.February 200470091280000000000001,280,000,000[78]Open to people 13 and older70002000000000000002[79]FetlifePeople who are into BDSMJanuary 200870062701715000000002,701,715[80]Open to people "of legal age to see adult content"70034131000000000004,131[81]FilmAffinityMovies and TV series20027005250000000000000250,000[82]Open70033151000000000003,151[83]FilmowMovies and TV series2009Open700444630000000000044,630[84]FledgeWingEntrepreneurial community targeted towards worldwide university studentsFeb 2009Open to university students7005696513000000000696,513[85]FlixsterMovies2007700763000000000000063,000,000[86]Open to people 13 and older70034012000000000004,012[87]FlickrPhoto sharing, commenting, photography related networking, worldwideFebruary 2004700732000000000000032,000,000[88]Open to people 13 and older (Yahoo! Login)700148000000000000048[89]Focus.comBusiness-to-business, worldwide20057005850000000000000850,000[90]Open to people 13 and older700412114000000000012,114[91]FotkiPhoto sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration.October 199870061632565000000001,632,565Open70038011000000000008,011[92]FotologPhotoblogging. Popular in South America and Spain2002700720000000000000020,000,000[93]Open70033168000000000003,168[94]FoursquareLocation based mobile social network2009700720000000000000020,000,000[95]Open7002817000000000000817[96]FriendicaDistributed, federated, privacy aware, open source, generalJuly 2010Open7005354946000000000354,946[97][n 2]Friends ReunitedUK based. School, college, work, sport and streetsJuly 2000700719000000000000019,000,000[98]Closed700429239000000000029,239[99]FriendsterGeneral. Popular in Southeast Asia. No longer popular in the western world2002700790000000000000090,000,000[100]Open to people 16 and older.700412167000000000012,167[101]FuelmyblogBlogging communityJuly 2007700450000000000000050,000[102]Open700485547000000000085,547[103]FyuseA spatial photography app and website which lets users capture and share interactive 3D images.2014Open7005359026000000000359,026Gab.aisocial networking service created as an alternative to social networks like Facebook, Twitter and Reddit.20167005310000000000000310,000[104]Open700417112000000000017,112 [105]Gaia OnlineAnime and games. Popular in United States, Canada and Europe. Moderately popular around Asia.2003700723523663000000023,523,663[106]Open to people 13 and older70036277000000000006,277[107]GamerDNAComputer and video games21 September 20067005310000000000000310,000[108]Open700459730000000000059,730[109]Gapyear.comTravel social networkJuly 1998Open700474763000000000074,763[110]Gather.comArticle, picture, and video sharing, as well as group discussions25 Feb 20057005465000000000000465,000[111]Open70033062000000000003,062[112]Gays.comSocial network for LGBT community, guide for LGBT bars, restaurants, clubs, shopping16 May 20087005100000000000000100,000[113]Open, global7005224302000000000224,302[114]Geni.comFamilies, genealogy16 January 2007700715000000000000015,000,000[115]Open70035958000000000005,958[116]GentlemintCommunity for sharing and discussing all things manly25 November 2011Open7005100196000000000100,196[117]GetGlueSocial network for entertainment.28 October 200870062000000000000002,000,000[118]Open70033735000000000003,735[119]GirlsAskGuysCommunity where people help each other by sharing their experiences & opinions.June 20077005450000000000000450,000[120]Open70034798000000000004,798[121]GogoyokoFair play in music - social networking site for musicians and music lovers.1 Oct 2009Invite only while in beta7005145552000000000145,552[122]GoodreadsLibrary cataloging, book lovers.December 2006700713000000000000013,000,000[123]Open7002327000000000000327[124]GoodwizzSocial network with matchmaking and personality games to find new contacts. Global, based in France.October 20107005110000000000000110,000[125][126]Open7005597008000000000597,008[127]Google+General28 June 201170091600000000000001,600,000,000[128]Open to people 13 and older [129]NA[n 3]GovLoopFor people in and around government.May 20087005138576000000000138,576[130]GrindrFor gay and bisexual men.[131]March 200970062400000000000002,400,000Open700490354000000000090,354[132]Grono.netPoland70062000000000000002,000,000[citation needed]Open7005395036000000000395,036[133]HabboGeneral for teens. Over 31 communities worldwide. Chat room and user profiles.August 20007008268000000000000268,000,000[134][135][136]Open to people 13 and older700415255000000000015,255[137]hi5General. Popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the United States.2003700780000000000000080,000,000[138]Open to people 13 and older.7002902000000000000902[139]Hospitality ClubHospitality7005328629000000000328,629[140]Open700499562000000000099,562[141]HotlistGeo-social aggregator rooted in the concept of knowing where users' friends are, were, and will be.700480000000000000080,000[142]Open7005155811000000000155,811[143]HR.comSocial networking site for human resources professionals.19997005194000000000000194,000[144]Open700479591000000000079,591[145]Hub CultureGlobal influencers focused on worth creation.November 2002700420000000000000020,000[146]Invite-only7005152756000000000152,756[147]IbiboTalent-based social networking site that allows users to promote themselves and discover new talent. Most popular in India.70063500000000000003,500,000[148]Open70031143000000000001,143[149]Identi.caTwitter-like service popular with hackers and software freedom advocates.7005395695000000000395,695[citation needed]Open70037290000000000007,290[150]Indaba MusicOnline collaboration for musicians, remix contests, and networking.7005350000000000000350,000[151]Open, global700445039000000000045,039[152]InfluensterOnline product sampling and review platform.20107005850000000000000850,000[153]Open, global70038612000000000008,612[154]InstagramA photo and video sharing site.October 20107008300000000000000300,000,000[155]Open to anyone 13 or older700141000000000000041IRC-GalleriaFinland7005505000000000000505,000[156]Open to Finnish speaking people 12 and older700436982000000000036,982[157]italkiLanguage learning social network. 100+ languages.7005500000000000000500,000[158]Open, global700418956000000000018,956[159]ItsmyMobile community worldwide, blogging, friends, personal TV-shows70062500000000000002,500,000[160][not in citation given]7005770100000000000770,100[161]JaikuGeneral. Microblogging. Owned by GoogleFebruary 2006Open to people 13 and older700462910000000000062,910[162]JiepangLocation-based mobile social network. In Chinese language201070063000000000000003,000,000[163]Open700414790000000000014,790[164]Kaixin001General. In Simplified Chinese; caters for mainland China usersOpen to the general public7002284000000000000284[165]KiwiboxGeneral.199970062400000000000002,400,000[166]Open to people 13 and older7005104563000000000104,563[167]LaiBhaariMarathi social networking20107005250000000000000250,000Open7005952782000000000952,782[168]Last.fmMusic2002700730000000000000030,000,000[169]Open7002772000000000000772[170]Late Night ShotsMessage boards, member profile pages, spotting other members2006700420000000000000020,000 (2008)[171]Invite-only7005228888000000000228,888[172]LibraryThingBook lovers29 August 200570061300000000000001,300,000[173]Open to people 13 and older700410800000000000010,800[174]LifeknotShared interests, hobbiesOpen to people 18 and older70061071686000000001,071,686[175]LinkedInBusiness and professional networkingMay 20037008200000000000000200,000,000[176]Open to people 14 and older[177]700112000000000000012[178]LinkExpatsSocial networking website for expatriates. 100+ countries.Open, global7005800451000000000800,451[179]ListographyLists. AutobiographyOpen700492525000000000092,525[180]LiveJournalBlogging. Popular in Russia and among the Russian-speaking diaspora abroad.15 April 1999700717564977000000017,564,977[181]Open (OpenID)7002115000000000000115[182]LivemochaOnline language learning70065000000000000005,000,000[183]Open70034100000000000004,100[184]MakeoutclubGeneral9 August 1999Open7005756300000000000756,300[185]MEETinGeneralOpen7005318979000000000318,979[186]Meetup (website)General. Used to plan offline meetings for people interested in various activitiesOpen to people 18 and older7002481000000000000481[187]MeetthebossBusiness and finance community, worldwide.Open7005315513000000000315,513[188]MillatFacebookGeneral, created in response to Facebook [189]May 20107005461200000000000461,200[190]Open7005236663000000000236,663[191]MindsFree, open source, decentralized, and based on a foundation of transparency and privacyJune 2015[192]70061000000000000001,000,000[193]Open700411191000000000011,191[194]mixiJapan25 October 2000700724323160000000024,323,160[195]Open7002232000000000000232[196]MocoSpaceMobile community, worldwide200570063000000000000003,000,000[197]Open to people 14 and older70039882000000000009,882[198]MOGMusicOpen to people 14 and older700413955000000000013,955[199]MouthShut.comSocial network, social media, consumer reviewsOpen70033340000000000003,340[200]MubiAuteur cinema7005200000000000000200,000Open700418225000000000018,225[201]MyHeritageFamily-oriented social network service700730000000000000030,000,000 [202]Open70033756000000000003,756[203]My OperaBlogging, mobile blogging, photo sharing, connecting with friends, Opera Link and Opera Unite. Global70067300000000000007,300,000[204]ClosedNA[n 3]MyspaceGeneralAugust 2003700730000000000000030,000,000+[205][not in citation given][206]Open to ages 13 and older.70033239000000000003,239[207]Nasza-klasa.plSchool, college and friends. Popular in Poland700711000000000000011,000,000[208]Open700475145000000000075,145[209]NetlogGeneral. Popular in Europe, Turkey, the Arab world and Canada's Qubec province. Formerly known as Facebox and Redbox.[210]700795000000000000095,000,000[211]Open to people 13 and older7002545000000000000545[212]NexopiaCanada70061400000000000001,400,000[213]Open to people 13 and older [214]700425241000000000025,241[215]NingUsers create their own social websites and social networks2005 (Networks 2007)Open to people 13 and older7002378000000000000378[216]OdnoklassnikiConnect with old classmates. Popular in Russia and former Soviet republics700745000000000000045,000,000[217]Open700165000000000000065[218]Open DiaryFirst online blogging community, founded in 1998199870065000000000000005,000,000[219]Open to people 13 and older700428134000000000028,134[220]OrkutGeneral. Owned by Google Inc. Popular in India and Brazil.[221]22 January 20047008100000000000000100,000,000[222]Closed7002319000000000000319[223]OUTeverywhereGay/LGBTQ communityOpen7005445440000000000445,440[224]PatientsLikeMeOnline 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.20067005109587000000000109,587[225]Open to people 13 years and up700469514000000000069,514[226]PartyflockDutch virtual community for people interested in house music and other electronic dance music.10 November 20017005321125000000000321,125Open to people 18 years and up700416828000000000016,828[227]PingstaCollaborative platform for the world's internetwork expertsInvite-only, only Internet experts70062533640000000002,533,640[228]PinterestOnline pinboard for organizing and sharing things you love2011Open700138000000000000038[229]PlaxoAggregator700750000000000000050,000,000[230]Open70035310000000000005,310[231]PlayfireComputer and video gamesOpen to people 13 and older700438259000000000038,259[232]Playlist.comGeneral, musicOpen to people over 1370038026000000000008,026[233]PlurkMicro-blogging, RSS, updates. Very popular in TaiwanOpen70031991000000000001,991[234]PoolwoSocial networking site from India7 January 2014700412350000000000012,350[235]Open7005764227000000000764,227[236]QuechupGeneral, friendship, dating2007Open to those over 16700482914000000000082,914[237]QuoraQuestions and answers2009OpenNA[238]QzoneGeneral. In Simplified Chinese; caters for mainland China users7008480000000000000480,000,000[239][240]Open to the general publicNA[n 3]RaptrVideo gamesOpen700425664000000000025,664[241]RavelryKnitting and crochet70063000000000000003,000,000[242]Open70032334000000000002,334[243]RenrenSignificant site in China. Was known as (Xiaonei) until August 2009.7008160000000000000160,000,000[244]Open700195000000000000095[245]ReverbNation.comSocial network for musician and bands7005500000000000000500,000[246]Open to people 16 and older70031806000000000001,806[247]Rooster TeethSocial network and community site4 October 2004[248]70062581527000000002,581,527[249]Open to people 13 and older70035336000000000005,336[250]RyzeBusiness7005500000000000000500,000[251]Closed700471324000000000071,324[252]ScienceStageScience-oriented multimedia platform and network for scientistsOpen700461668000000000061,668[253]ShareTheMusicMusic community. Sharing and listening to music free and legallyOpen7005612429000000000612,429[254]ShelfariBooks11 October 2006Open700418152000000000018,152[255]Sina WeiboSocial microblogging site in mainland China.14 August 20097008300000000000000300,000,000[256]Open700128000000000000028[257]SkoobCollaborative social network for Brazilian readers20097005420000000000000420,000[258]Open700428449000000000028,449[259]SkyrockSocial network in French-speaking world700722000000000000022,000,000[260]Open7002710000000000000710[261]SocialVibeSocial network for charity7005435000000000000435,000[citation needed]Open7005101364000000000101,364[262]Sonico.comGeneral. Popular in Latin America and Spanish and Portuguese speaking regions.700750000000000000050,000,000[263][264]Open to people 13 and older70032676000000000002,676[265]SoundCloudRepository of original music pieces and networking.700710000000000000010,000,000[266]Open7002299000000000000299[267]SpacesRussian social network targeted to mobile phone usersOpen70039953000000000009,953[268]Spot.IMA service for webmasters to add social networking functionality to their websites20127005250000000000000250,000[269]Open700468016000000000068,016[270]Spring.meSocial network for meeting peopleSeptember 2013Open to people 13 and older70034967000000000004,967[271]Stage 32US-based social network and educational site for creative professionals in film, television and theaterFebruary 20127005175000000000000175,000[citation needed]700435382000000000035,382[272]StickamLive video streaming and chat.70069000000000000009,000,000[273]Closed70039201000000000009,201[274]StreetlifeUK based. Links members according to where they live21 March 201170061000000000000001,000,000[275]Open700418757000000000018,757 [276]StudiVZUniversity students, mostly in the German-speaking countries. School students and those out of education sign up via its partner sites schlerVZ and meinVZ.700717000000000000017,000,000[277]Open70037080000000000007,080[278]Students Circle NetworkA social network connecting students, teachers and institutions to course resources, study groups and learning spaces.December 2010Open7005345110000000000345,110[279]StumbleUponStumble through websites that match users' selected interests700720000000000000020,000,000[280]Open7002146000000000000146[281]TaggedGeneral.October 20047008100000000000000100,000,000[282]Open7002288000000000000288[283]TalkbiznowBusiness networkingOpen7005136346000000000136,346[284]Taringa!General (primarily Argentina)700711000000000000011,000,000[285]Open to people 13 and older7002214000000000000214[286]TeachStreetEducation / learning / teaching - more than 400 subjectsOpen7005422704000000000422,704[287]TermWikiLearning / languages / translation - 1.2 million terms in more than 1300 subjectsMay 2010Open700422997000000000022,997[288]The SphereA private online social luxury network with exclusive personalized servicesDecember 200870031300000000000001,300[289]Invite-only70061115305000000001,115,305[290]TravBuddy.comTravel200570061588000000000001,588,000[291]Open to people 18 and older700421523000000000021,523[292]TravellerspointTravel20027005310000000000000310,000[293]Open700415275000000000015,275[294]TsuGeneral2008Open70035230000000000005,230[295]tribe.netGeneralOpen70038081000000000008,081[296]Trombi.comFrench subsidiary of Classmates.com70064400000000000004,400,000[297]700416227000000000016,227[298]TuentiSpanish-based university and high school social network.700712000000000000012,000,000[299]Open700416484000000000016,484[300]TumblrMicroblogging platform and social networking website.February 20077008226950000000000226,950,000[301]Open700141000000000000041[302]TwitterGeneral. Micro-blogging, RSS, updates15 July 20067008645750000000000645,750,000[303]Open to all ages [304]70008000000000000008[305]TyltedMobile social game network[306]200770063000000000000003,000,000[307]Open to people 14 and older7005737508000000000737,508[308]UntappdBeer check-in social network.[309]October 201070063200000000000003,200,000Open700415509000000000015,509Untappd.com Site Info. Alexa. Retrieved 10 August 2017.UplikeGeneral201170061050039000000001,050,039[310]Open7002288000000000000288[311]VKGeneral, including music upload, listening and search. Popular in Russia and former Soviet republics.September 20067008249409900000000249,409,900[312]Open700138000000000000038[313]Vampirefreaks.comGothic and industrial subculture199970061931049000000001,931,049[314]Open to users 13 and over700421052000000000021,052[315]ViadeoGlobal social networking and campus networking available in English, French, German, Spanish, Italian and Portuguese700735000000000000035,000,000[316]Open7002435000000000000435[317]VirbSocial network that focuses heavily on artists, including musicians and photographers2007Open700433371000000000033,371[318]VoxBloggingOpen700456558000000000056,558[319]WattpadFor readers and authors to interact and e-book sharingOpen70037036000000000007,036[320]WAYNTravel and lifestyleMay 2003700710000000000000010,000,000[321]Open to people 18 and older70031367000000000001,367[322]WeeWorldTeenagers - 9 to 17700730000000000000030,000,000[323]Open to ages 10 and older.700418317000000000018,317[324]We Heart ItImage-based social network focused on inspiration, expression and creativity2008700720000000000000020,000,000[325]Open7002899000000000000899[326]WellwerCommunity without borders, where sharing is everything.September 2011Open to people 13 years and older7005370755000000000370,755[327]Wepolls.comSocial polling networkOpen70061204376000000001,204,376[328]Wer-kennt-wenGeneralGeneral70032147000000000002,147[329]weReadBooksJune 200770064000000000000004,000,000[citation needed]Open7005305720000000000305,720[330]WooxieBlogging and micro-bloggingOpen7005111538000000000111,538[331]WriteAPrisoner.comSite networking inmates, friends, familySeptember 2000700466000000000000066,000[332]Open to people 18 years and older7005228915000000000228,915[333]XangaBlogs and "metro" areas1998700727000000000000027,000,000[334]Open70033943000000000003,943[335]XINGBusiness (primarily Europe (Germany, Austria, Switzerland))700711100000000000011,100,000[336]Open7002270000000000000270[337]Xt3Catholic social networking, created for World Youth Day 2008Open7005712292000000000712,292[338]YammerSocial networking for office colleagues2008Must have company email70033622000000000003,622[339]Yelp, Inc.Local business review and talkOpen7002186000000000000186[340]YookosGeneral: photos, videos, blogs, games.Open700453498000000000053,498[341]Zoo.grGreek web meeting point20047005890000000000000890,000[342]Open700434577000000000034,577[343]

Excerpt from:
List of social networking websites - Wikipedia