Shouldn't there be one, at least as a warning for others to point out those individuals that scam and cheat others? ANET is limited in what they can do, but the power of the people can be very influential. Thanks for the lighter side of life reminder, btw.....
Well, if you're talking about making a whole list to watch out for individuals that scam and cheat others, I think it's pretty useless. Nobody's going to check that list and scams can be avoided pretty easily if you focus.
Easy to abuse, hard to mod/monitor. So no, they do not exist(though I know there are a few guilds out there that keep their own personal lists of abusers, but those are not generally available to the public).
Its also against forum rules to post names unless you have permission.
I honestly think that its not a very good idea because if people are getting scammed, thats them being stupid. Not to sound a little evil but if noobs are stupid enough to get scammed, then let them get scammed. Might learn something for a change.