Say a bidder successfully buys a radio and the seller is genuine and sends it out to the buyer. What is to stop the scam buyer from saying he never received it? The seller can't prove he sent it, even if shows signed for receipts the buyer can just say the boxes were empty.
What does Bitmit do in these situations?
I'm wondering that myself. As they are in possession of the BTC involved in the transaction, you'd think that they will have to police that at some level. I assume they don't just send the BTC back to the buyer without trying to get a response from the seller, but perhaps someone from bitmit can fill us in?