Quote (AnimeFTW @ 22 Aug 2011 20:41)
If the trade itself is illegal, he cannot get locked, from what I've seen...
The only time I've seen an unsupported trade scammer get locked was in a poker game. The scammer made the other guy upfront.
Just because a trade is illegal, it does not mean that scamming is allowed in that trade.
Scamming is clearly against the rules, there are no exceptions.