They want to own the mobile ecosystem. After they release enough Facebook _____ apps, they can (a) lean on the OS makers to give them preferential treatment, al

They want to own the mobile ecosystem. After they release enough Facebook _____ apps, they can (a) lean on the OS makers to give them preferential treatment, ala Twitter in iOS, and/or (b) release a Facebook phone with "all the apps you already know and love".