1. Facebook
   1. "Connected" 156 million users
      1. fan page: everything they care about
      2. purpose: making friends
      3. human nature: make things easier (laziness) curiosity satisfaction
      4. pomposity: include everything types of information
2. Twitter
   1. "Yours to discover 307 million users
      1. microblog: text based
      2. frequency: intrusive
      3. non-important: things can be all discover
      4. stranger friendly: @ any one
      5. trending:participation
3. SNS campaign
   1. connecting virtual and reality
   2. expressing feeling
   3. sharing feeling
   4. arouses interests
4. tumblr
   1. 460 million users
      1. Blog: interesting contents
      2. creativity
      3. meme/GIF
5. quora
   1. "the best sources of knowledge"
      1. insights/points sharing
      2. professional
6. reddit
   1. "we power awesome communities" "the front page of internet" 36 million users
      1. details exploration
      2. community discussion
      3. fan art
7. youtube
   1. "broadcast yourself" 1.3 billion users
8. instagram
   1. "Capture and share the worlds moments" 400 million users