I've considered reporting these people too. I guess I can't really answer any of your questions but I would like to say that finding a 21 year old truck with hardly any miles on it for a dirt cheap price makes you a lot less bashful about slamming on the brakes. The chances of losing control from a direct bump in the rear are slim to none and you don't even have to come to a complete stop to make them feel like an idiot.
My sturdy steel bumper stays looking new thanks to the can of flat black plasti-dip in the tool box too.