<disclaimer> I'm pretty drunk </disclaimer> So what happens when you graduate? is it proper form to go through and un-friend everyone? Or do you just let the co

<disclaimer> I'm pretty drunk </disclaimer> So what happens when you graduate? is it proper form to go through and un-friend everyone? Or do you just let the connections sit around stale? And then to add to the confusion my LinkedIn social graph is wildly disconnected from my Facebook social graph. When do I de-friend? When do I only network "professionally"? Why am I even on a social network? </drunk>