odoketa writes "According to the BBC, it seems Google scheduled a party to promote their payment system (Google Checkout) on the same day as a big eBay meeting, and this made eBay mad enough to pull their ads with Google. According to the story, eBay says it's merely an 'ongoing experiment' on their marketing. 'Google hoped to alert PayPal users who would have been in Boston attending the eBay Live annual seller event to its own service, according to market experts. It could also have been seen as part of an effort to get eBay to accept Google Checkout, currently banned on the online auctioneer's site. But in a contrite manner, Google cancelled its rival function a day before it was due to happen.'"