[Melinda]

Unfortunately, this doesn’t let sellers warn other sellers about buyers who scam the system as I described earlier, a method that is becoming more popular for thieves.

[Wolfie]

That’s the real problem. There are scam artists out there who will purchase an item, and then start negotiating for a lower price, holding the threat of negative feedback against the seller. This just makes that all that much easier since they now have nothiing to fear from the feedback process.