Great question. As a former Ebay and Amazon seller, I stopped because it is a scammer paradise now from the buying side. Ebay will almost always take their word, even if what you shipped them weighed 22 lbs and what they whipped back weighed 3.

Paypal can be just as bad despite severing their ties officially with Ebay. If Dcommerce demonstrates they can handle this tug between buyer/seller more fairly than Ebay and bring buyers to the site, I figure their biggest issue will be handling the server load from growth. Many gave up on Ebay (as I did) and many more learn the hard way as evidenced by their seller forums which I still peruse sometimes to see if anything got better.