Google Web History: Fantastically...What?

This looks really cool:

Web History: All the web sites you visit, at your fingertips.

* View your web activity.
* Search the full text of pages you've visited.
* Get personalized search results and more.

But frankly, I'm far too frightened to install it. The idea of not just giving all this data to Google (based in the US, remember, with that nice Mr. Bush in charge), but authorising it to track my every move online....Nein Danke. (Via Vecosys.)