In view of the thefts occurred in gox (if true), poloniex, flexcoin and since bitcoins are traceable. Wouldn't it be good to create a list to trace the movements of stolen coins for, at least, they can not be sold in major exchanges?
It would be better to have the industry standard that all exchanges' wallets are being made public (tagged in blockchain).
When your stolen coins appear on an exchange's tagged address, you would simply notify this exchange that the coins that were stolen from you have just arrived in their wallet. The exchange knows who funded the wallet with your stolen bitcoins and can give the name of the thief to the police for further investogation.
I'm a huge fan of this.