[apowell]

  Since it goes straight to your destination, 
  Google cannot store data on your behavior.

I think this is a very cool idea and does provide some level of privacy, but it shouldn't be overstated. Google still has your search history (arguably more sensitive than the actual search result clicked), and in many cases can back into your click behavior via Google Analytics/Adsense code which is embedded on many, many sites (unless you're scrubbing referrer data as well).