Google is collecting a lot of data about individual people, and the company's bar will report even more information back to the HQ. Being based in the US, Google has no meaningful privacy policy as we Europeans understand it - for instance, there's no way for individuals to get their data out of Google's system, and Google asserts the right to sell or give this information to anyone.

I would recommend that people get Firefox (http://www.getfirefox.com/) as it was intended to be. Google is paying intermediaries 80 euro cents to download their toolbar; is your privacy worth that little?