I don't understand apps
It seems like most of the devices these days support the installation of "apps". I don't understand this concept. Granted, some apps really are applications that do something... like being able to identify the song on the radio, but most are (to my mind) nothing more than glorified links to a website.
Why the trend away from mobile websites which are much more device independent? Is there some advantage to the Facebook, Twitter, and Gmail apps that wasn't available from the mobile websites?