System administrators take note: That mobile employee expense app you're building should be every bit as easy to use as Facebook. Oh, and you better deliver it quickly too, because that's how Facebook rolls. Increasingly, organizations are finding that they need to build mobile apps for their employees in this hyper-connected world. Because employees are probably already used to Twitter, Facebook, Google Maps and other consumer-friendly apps, they'll expect a high degree of polish and performance from their enterprise apps as well.