Isn't eBay on the verge of doing away with buyer feedback, i.e. only sellers will receive feedback? Given eBay's gradual move towards large, electronic storefronts, it gives them more time to focus on fraudulent sellers, which I gather is where most of the fraud occurs. It also puts eBay more in line with online retailer like and traditional brick and morters. And finally, it pushes more sellers towards requiring immediate payment with PayPal, thereby increasing eBay's cut of the sale.
Trev