Sgt_Kickaxe - 4:43 am on Mar 14, 2013 (gmt 0)
because existing customers would have come to eBay regardless
eBay sells that pitch to their own affiliates as a reason why their quality click pricing payout "system" devalues clicks on a whim.
This article just shines a spotlight on problems at eBay and I'm not surprised they don't like adwords given some of the ads I've seen. I'm not a huge fan of Google adwords(page quality scoring system) but Google's not the problem here.