http://www.news.com/News/Item/0,4,28301,00.html?st.ne.fd.gif.f Extract: Online auctioneers smell a rat. Individuals who sell items over online auction sites like eBay <http://www.ebay.com/> and AuctionUniverse <http://www.auctionuniverse.com/> suspect that their bidding sessions are being artificially manipulated by phantom buyers known as "shielders" and "shills"--and that the auction sites are not doing all they can to discourage the fraud.