Top 2 social network websites are facebook.com & twitter.com.
And there are some website you may need to know as below:
Re-United Sites
www.forcesreunited.org.uk – UK Armed Services Reunited
www.servicepals.com – a new UK Armed Services social networking site
www.nursesreconnected.com – UK Nurses Reconnected
Other Sites Popular In The UK
www.bebo.com – once popular in the UK, aimed at younger people
www.faceparty.com – once popular in the UK
www.flixster.com – once popular with people who like films
www.hi5.com – once popular around the world
www.linkedin.com – popular international business related site
www.myspace.com – once popular site
www.netlog.com – once popular around the world
www.wayn.com – still seems popular with people who travel & holiday a lot
Other Sites Popular Around The World
www.vk.com – a Russian take on Facebook, not only popular with people from Eastern Europe
www.vk.com – the search page for VK, so you don’t have to log-in
www.ok.ru – another useful Russian / East European site, requires an avccount to search but can be accessed via google advanced search
www.weibo.com – Weibo is a Chinese microblogging website, a bit like Twitter
www.foursquare.com – foursquare is a location-based social networking website with software for mobile devices
www.reunion.com – like friends reunited but American
www.mymuslimpage.com – muslim social networking group, not used much nowadays
www.mymfb.com – My Muslim Friends Book, mostly private pages but still some useful stuff
www.mymfb.com – My Muslim Friends Book, search page for groups, not people
www.blackplanet.com – blackplanet is the largest black website in the world
Others Sites Of Interest
www.wikipedia.org – a fuller list of social networking sites around the world
www.accountkiller.com – provides instructions on how to remove your account or public profile on most popular websites
www.whoishostingthis.com – an article titled “Social Media Privacy for Teachers” but seems relevant & useful
www.tagged.com – social networking site popular in American and the West Indies
www.48ers.com – a search tool for content on the popular social networking sites
www.whotalking.com – check out real time results of Who’s Talking about searched words on a number of different Social Media sites