This seems like a good idea, RP wise, though it could backfire if you were broadcasting everything through system chat.
Honestly, though, this seems like a police function, more than anything. Also, it could get boring to play after a while, though anyone who can trade to a battleship in a week should be able to handle plenty of boredom.:P
It's a good idea, really, but not something I'd want to get involved in. Especially considering that my only trader is a part-time smuggler. The less his name is seen, the better.....