If it isn't 290's it'd be 40/15's or SoJ's again. If it was so easy they'd of done it by now. The problem with Blizzard is simply that their far to easy on the people that dupe large scale. They know who they are, but don't want to incur massive legal fees in trying to tackle them through the courts. It is technically illegal because it goes against your TOU, but if they start on the dupers, then they move on to the eBayers, then the MH users, and eventually where will it stop. All the extreme players are violating their TOU anyway by using to much server time.

The people who play the game are the problem, not Blizzard themselves.