Social media refers to web-based applications that allow users to create and share content. Popular social media platforms include Facebook for social networking, YouTube for sharing videos, and blogs, forums, microblogging sites and wikis for communication, collaboration and entertainment. Social media has transformed how people interact online.

2. Social Media Social Media
web application

3. Social Media
Social
Media

5. Facebook -
Social Networking

6. Mouth Shut –
Product Reviews

7. Youmeo –
Social Network

8. YouTube –
Social Networking

9. Social Media
Communication)
Blogs: Blogger, LiveJournal, TypePad, WordPress, Vox
Internet forums: vBulletin, phpBB
Micro-blogging: Twitter,Plurk, Pownce, Jaiku
Social networking: Avatars United, Bebo, Facebook, LinkedIn, MySpace,
Orkut, Skyrock, Netlog, Hi5, Friendster, Multiply
Social network aggregation: FriendFeed, Youmeo
Events: Upcoming, Eventful, Meetup.com
Collaboration)
Wikis: Wikipedia, PBwiki, wetpaint
Social bookmarking: Delicious, StumbleUpon, Stumpedia, Google Reader,
CiteULike
Social news: Digg, Mixx, Reddit
Opinion sites: epinions, Yelp

10. Social Media
Entertainment)
Virtual worlds: Second Life, The Sims Online
Online gaming: World of Warcraft, EverQuest, Age of
Conan, Spore (2008 video game)
Game sharing: Miniclip