Please don't sell accounts that have positive trust from DT members... you're just opening up scammers to be able to scam.
Scamming is always a possibility but if users are smart enough, they will use an escrow when doing trades
But what about if they start doing PayPal -> Bitcoin trades? Escrow isn't an option when it comes to PayPal trades. There are plenty of other ways that one could scam another.
There is nothing i can do about paypal trades, people will trade whether or not the account has positive trust