Some magnet schools have a competitive entrance process, requiring an entrance examination, interview, or audition. Other magnet schools select all students who apply or use a lottery system, or a system combining some elements of competitive entrance and a lottery.
As of February 2016, WhatsApp had 1 billion monthly active users, up from April 2015 when the company announced over 800 million MAU. The company's growth in India is also pretty impressive at around 5 million additional MAU per month (60M in Aug '14).
Snapchat Now Has More Users Than Twitter. An estimated 150 million people now use Snapchat, according to Bloomberg. The messaging app now claims more active users than the micro-blogging platform Twitter, which now has only 140 million active users.