i know alot of people say sedo is to blame when the buyer doesnt pay. of all the faults sedo has, this is not one of them. it happens at any online auction house.
sedo is a venue for buyers and sellers. and buyers back out. that is not sedos fault and they cant force them to pay. you just cant when you deal online. it is nearly impossible.
even if sedo disclosed to the seller the buyers details- and you personally decided to sue because they broke the contract when bidding- are you really going to spend that money to sue someone for breach of contract each time it happens?
the only way i can see this being avoided would be a whole new set up- where by before a bid the buyer deposits money to cover that bid into an account- so it is there if they win. but that can end up being an accounting nightmare, and as a buy, you end up tying up your money in several auctions until the end.
so, i dont think there is any real way to assure 100% of payment from a buyer. and the more steps taken to secure payment, the more manhours used, and in time, a raise in commissions.
with that being said, that is the ONLY thing i dont hold againt sedo