http://www.techcrunch.com/2008/05/28/live-yang-decker-talk-yahoo-at-d6/

"I like Google"

What Yahoo's Jerry Yang also said according to TechCrunch:

<<“We feel very strongly about our ability to monetize search. There’s a value gap between us and the market leader.” [Yang] says the test with Google gave them an understanding of how effectively Google could monetize Yahoo’s inventory.>>