If super secret squirrel searches are your need, you may wish to look at things like, disabling Referrer, Tor, Disabling Flash completely (as it represents it's own version of a cookie), disabling cookies, regularly DBANing your system, and even then realizing that you are still screwed according to EFF's research in their Panopticlick project (https://panopticlick.eff.org/)
True. torbutton does a lot of that, however, so if you enable it and completely disable javascript you can get your browser uniqueness down to about 1 in 1500
