No, we're not giving any more information than would otherwise flow by clicking on a link in the SERPs. And actually, we're giving less information than if you would click on the same result in Google because we're not sending your search terms via the referrer header. We've stayed away from things like commission junction because then you would be giving away information as it is routed through a third-party. For more info, see the privacy policy: http://duckduckgo.com/privacy.html. In the other direction, Amazon doesn't share any personal info.