bmongar writes: "It seems that eBay is going after sellers that make contact with people who bid on their items who were not the winners. They want those companies to sell only to those people through eBay. ZDNet is running the story It seems to me that is only likely to discourage their best customers their powersellers. I think they may lose more money from this than they loose from offline deals."
Sites like eBay operate on a surprising amount of trust -- I've had happy deals there, and an unhappy scam experience, too. Raise one pinky if you think they can really do much about offline sales, though.