Cookies? WTF

Well, blocking cookies won't stop Google from storing anonymous search information. Also, unless you use an ISP that frequently changes your IP address, Google will be able to put together a pretty clear profile of each user's search patterns.

And people who use trackmenot are just degrading the search experience for everyone else. If Google do actually tweak their search algorithms based on collected data, then submitting multiple (semi-)random searches will just degrade google's ability to optimize their service.