Bolded = used a lot for years.

• Blogspot
• Cyworld
• Flavors.me
• Flickr
• Forums
  • art
  • sports cars
  • support groups
• Instagram
• LiveJournal
• Makeshift (can't remember exact name of the social networking site)
• MySpace
• Neopets
• Pinterest
• Playfire
• Shelfari
• Stickam
• Stumbleupon
• Tumblr
• Xanga