AlltheInterweb's Internet Directory
Fubar: Your Social Connection - A social networking site with over 3,862,160 people.
My Friends Together - A private network for just you, and friends you invite. (subscription required)
Google+ - The new "Google Plus" social networking service from the world's favourite Search Engine service.
Facebook - Connect with friends & family, find old friends, make new friends, play games & more on the world's largest social networking website.
MySpace - Connect with friends & family, find old friends, make new friends, share photographs, find new music, play games and more on one of the largest social networking websites.
Twitter - The famous microblogging website used by companies, websites, politicians celebrities, news sources & ordinary folk.
Tumblr - Tumblr lets you effortlessly share anything.
Post text, photos, quotes, links, music, and videos from your browser, phone, desktop, email or wherever you happen to be. You can customize everything, from colors to your theme's HTML.
Instagram - Popular picture sharing social network. Works best through a Smartphone App, and a bit of a fussy sod about image sizes (crops 'em).