If the goal is privacy, there are many search engines respecting privacy already. The goal is better search results!
Since I don't have a Google account and ban many evil domain names such as googleanalytics.com, facebook.com, they can't track my information already. for me, there is no need to use a search engine with crappy user interface.
http://io.kodfabrik.com/2010/09/23/ie9.html (Thoughts on IE9 and Teleportation)