Breaking: Facebook's Buying Instagram for a Billion Dollarshttps://gizmodo.com/facebook-photo-library-dwarfs-everything-else-on-the-pl-5841667 How fast has Instagram grown? It’s got 30 million users despite having been iOS-only until recently. And it just expanded its API to include uploads from competitors like Hipstamatic. If everyone you know wasn’t on it before, they were going to be soon. In fact, after this deal goes through, they definitely will be
