Reviewed in Simple and effective everyday apps
The new Wikipedia! Ask question, get answers from the most suitable people for that. Or even better, just surf through the app to learn awesome stuffs. There are some really inspiring stories in there. Plus, I already saw some master thesis with Quora references !
syosyosyo: intelligent community of questions and answers from experts of all fields. You can set up your favorite topics and such to watch too.
Reviewed in Reviewed Must Have Apps
Wow! Again a "this made my day" app. A Twitter-like interface where you follow topics and follow certain people of the specific topic. This is about finding and writing questions about anything and reading the answers. Smart answers by smart people. Definitely a must have.