Borrowing from the categories on Brian Solis’ Conversation Prism, these are the common “categories” you’ll find in social media along with some examples of applications. Please feel free to make suggestions in the comments & I’ll update this list accordingly. You can also find a delightfully overwhelming list of Web 2.0 applications at Go2Web20.net.
(clockwise from top)
Comment & Reputation:
Disqus, CoComment, SezWho, BackType, Echo
Crowdsourced Content:
Newsvine, Digg, Mixx, Reddit, Amplify
Questions and Answers:
Yahoo Answers, Mahalo Answers, LinkedIn, Quora
Social Commerce:
Viewpoints, Living Social, Shop Igniter, Groupon
Blog Platforms:
WordPress, Blogger, Typepad, Moveable Type, Posterous
Blogs/Conversations:
Technorati, SocialMedian, BuzzLogic, Radian6
Blog Communities:
Bloglines, Blogged, MyBlogLog, BlogHer
Micromedia:
Twitter, Tumblr, Utterz, Identi.ca, Plurk
Lifestreams:
SocialThing, Swurl, Lifestream.fm, Friendfeed
Twitter:
Tweetdeck, Twitpic, GroupTweet, Media Funnel, Seesmic, Hootsuite
SMS/Voice:
Jott, Remember the Milk, Pinger, Reqall
Social Networks:
MySpace, Facebook, Bebo, Hi5, Orkut
Niche Networks:
Ning, Plaxo, LinkedIn, Crowdvine, Socialcast
Customer Service Networks:
Yelp, Yahoo!Groups, Google Groups, Qapacity
Listening & Targeting:
Social Mention, Radian6, Analytic.ly, Collecta
Location:
Foursquare, TripIt, BrightKite, Gowalla, Dopplr
Video:
YouTube, Viddler, Metacafe, Vimeo, DoGooderTv, Seesmic
Video Aggregation:
Documents:
Scribd, Docstoc, ThinkFree, Slideshare, Prezi
Events:
Socializr, Upcoming, Involver, Eventbrite, Meetup
Music:
Pandora, Last.fm, Odeo, iLike, Blip.fm
Wiki:
Twiki, Wetpaint, PBWiki, Plime
Livecasting (Audio & Video):
BlogTalkRadio, Qik, Ustream, kyte, Chatroulette
Pictures:
Flickr, Instagram, SmugMug, Picnik, Photobucket

