Interesting option for Firefox users (not that I know *ANY* of them!).
Eric Schmidt says: "If you have something that you don't want anyone to know, maybe you shouldn't be doing it in the first place." Alrighty then. That's crap. With the exception of illegal activity, who decides what you should and shouldn't do? Sheesh.
Making business decisions under regulatory or societal pressure is one thing. Just don't say stupid, puritanical stuff that makes you sound completely out of touch with reality and your own business.
Anyway, is the issue the IP address or that a company is using your search data to make marketing decisions? Certainly different for different people. Of course, I don't mind if Bing uses my info because I work here. But for the average user, what's OK?