Instagram's expansion continues as it tops 500 million users
 

With 1.6 billion users, Facebook is used to big numbers. Even Whatsapp has one billion people using it every month. Instagram, on the other hand, isn't quite as big as its counterparts, but that doesn't mean it's not expanding at a decent clip. In a...

https://www.engadget.com/2016/06/21/...million-users/