Social Networking (Facebook, Twitter, LinkedIn, Google+, Pinterest, Tumblr, Instagram, Page)
Blogs (Wordpress, Blogger, Tumbler)
Wikis (Wikipedia, Wikibooks, Wikiversity, Commons, Wiktionary, Wikiquote, Wikivoyage, Wikidata, Wikinews, Wikispecies, MediaWiki)
Video Sharing Sites (Youtube, Facebook, LinkedIn, Flickr, Photobucket, Twitter, Veoh, Dailymotion, VimeoPRO, Myspace.com, Metacafe)