eBay has removed all sales of virtual property from their site. Their reasoning, which is not totally out of line, is that it is unclear who owns these goods. The player? The game company? Since most MMORPG games feature terms of service prohibit this sort of activity, I do not totally fault them.
The real issue is that the ownership question needs to be settled. Ifthe player that earns something in a virtual world has paid for that privilege and earned the property, I think they have pretty good standing. The ability for the game developers to claim those rights seem a stretch at best.
Until legal ownership can be established, it looks like gamers will have to use other services to sell their goods.