Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
Quora Writing Sessions - The popular Q&A platform launches their version of AMA's
YAM - Video Q&A platform where you can get paid to ask or answer questions.
tumblr Answer Time - Like reddit AMAs, but on tumblr
Boost - Boost is an e-commerce for mobile, where users can generate hashtags for products and instantly sell and buyers can tweet to make a purchase
Arise - Leave your procrastination demons behind (with pomodoro)