PROVIDING ON-LINE TRADING SERVICES IN WHICH SELLER POSTS ITEMS OR SERVICES TO BE AUCTIONED OR OTHERWISE SOLD AND/OR WHERE BUYERS POST ITEMS AND/OR SERVICES WANTED TO PURCHASE, WHERE BIDDING IS DONE ELECTRONICALLY, WHERE CONSUMERS AND/OR BUYERS PROVIDE EVALUATIVE FEEDBACK AND RATINGS OF SELLERS' GOODS AND/OR SERVICES, THE RELATIVE VALUE AND/OR PRICES OF SELLERS' GOODS, BUYERS' AND/OR SELLERS' PERFORMANCE, DELIVERY, AND OVERALL TRADING EXPERIENCE IN CONNECTION THEREWITH