Let's say that it was in fact intended as a user experience optimization, as you suggested. If you were Facebook, and you now had access to the camera's feed wh

Let's say that it was in fact intended as a user experience optimization, as you suggested. If you were Facebook, and you now had access to the camera's feed when it wasn't in use, would you really be able to restrain yourself from violating the user's privacy? I imagine for Facebook it would be like seeing a freshly cooked pie on a window sill.