Spammers, trolls, incompetent thick-headed idiots; they're all incredibly annoying and persistent. really there are only a few ways I can think to get rid of them. One, find and kill them. Two, hack them and kill them with enough viruses and lag to make the PSN outage look pathetic and weak. Three, block them from doing anything before they do harm. Unfortunately, only the last one is both legal and really possible.