I know the thought of there being a mass exodus on Facebook seems pretty ridiculous, but there was a point in time in which I would have said the same thing about Myspace. Any platform has the possibility of being replaced by the "new thing". Facebook just typically buys the "new thing" before it can become the "new thing".
There is an on going battle in our office... A Facebook hacking battle.
It all started with me last summer. Kris left his Facebook open in the studio (which is a HUGE radio no no). Not a "no no" because it's bad but because that leaves the Facebook that is open to be fair game for posting...