Heh, you can't check now since Lens has prevented spiders accessing GFY, but a while ago, if you used the
Way Back Machine on gofuckyourself.com, you'd see what GFY was before it was a message board. A big Go Fuck Yourself to people who were known scammers.
I reckon it's a good idea, but there'd have to be some sort of way to prove the person was cheating. If there was just a misunderstanding, and someone's name ends up there, it could quite easily fuck up their reputation.