ZDNet: News: eBay targets offline deal making
eBay is cracking down on offline business deals between its buyers and sellers that circumvent the fees normally paid to the online auction company.
Effective immediately, eBay will first warn, then suspend, members who use their eBay connection to conduct business offline. For example, it is against eBay rules for a person to contact a losing bidder on eBay to offer that person the same product without going through eBay.
http://www.zdnet.com/zdnn/stories/news/0,4586,2669105,00.html