Auction giant eBay will phase out its keyword ad program, which allows sellers to bid for keywords and get placement of text and display ads on its Web sites, in favor of Yahoo!’s pay-per-click ads.

As I describe in my “eBay vs. Google: eBay AdContext contextual ad network set to launch”, eBay unveiled this weekend a new, automated keyword-based contextual ad system for use by its partner network ...

eBay Keywords is a Google AdWords style CPC keyword-based text ad product available right now only to eBay sellers, by auction bid, for display at eBay. eBay’s just launched AdContext off-site ...