When you try to design a mobile app you quickly realize how little real-estate you have on a phone to build a complex interface. Facebook is a ridiculously comp

When you try to design a mobile app you quickly realize how little real-estate you have on a phone to build a complex interface. Facebook is a ridiculously complex app when you think about all of the things you can do. Facebook might be working under the assumption that they can make cleaner, simpler products by breaking them out into smaller functional units all backed by the same social graph. Or this could be a relic of something the Sofa team was working on before the Instagram deal.