"We've worked closely with Yahoo to implement these new features in accordance with contractual terms and our privacy policy. To be as transparent as possible,

"We've worked closely with Yahoo to implement these new features in accordance with contractual terms and our privacy policy. To be as transparent as possible, we've written up details on the technical implementation." As a search user, I couldn't care less about this stuff. I don't think it's even possible to build a good search engine "in accordance with contractual terms".