As a web enthusiast, I've registered with so many sites that I lost account of the number of profiles I maintain (or ought to!). That said, below is my best shot at listing at least the main ones:

Academia.edu Anime N. Network Blogger CouchSurfing Del.icio.us DeviantArt Digg Facebook Firefox addons Flickr Flixster FriendFeed Geni GoodReads Google Google Reader Hi5 Identi.ca IMDb Last.fm LaunchPad LibraryThing LinkedIn LiveSpaces MySpace NetLog Orkut Plaxo Technorati Twitter Vimeo WAYN Wikimedia Xing Youtube

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