Traditional Blog
Tumblrhttp://tumblr.com
Posteroushttp://posterous.com
Miniblogging
Twitterhttp://twitter.comMicroblogging
Facebookhttp://facebook.comKitchen Sink Social Networking
Foursquarehttp://foursquare.comLocation-Based
LinkedInhttp://linkedin.comProfessional Networking
Pinteresthttp://pinterest.comVirtual Scrapbook
YouTubehttp://youtube.comVideo Sharing