it'll just increase your "Potential Threat Level" on the one list that does exist. And they might SELECT * from homies_in_the_USA where threat_level > 5 or something, and you'd be on that list
There are probably more than one list.
We're all on more than one list. Local, state, federal. Airlines have lists. Stores have lists. Websites have lists. At this point, I was wondering if the govt or facebook has more info one you, then I remembered that if FB has it, so does Big Brother.