Blizzard doesnt aprove of muling and there is a reason. They beleive that players should play the character they create. Also, the economy would flow better if blizzard would actualy fight against mule. As ppl wouldnt mass up ton of shit that they will probably never touch again. They would keep what they need and trade for what they want. The whole point of an rpg is to have a hero that has his own stuff and doesnt have 24 slaves carrying his shit.