"[Google] is making it harder for you to maintain control of your personal information. Why are they so interested in doing this that they would risk this kind of backlash? One logical reason: Every data point they collect and connect to you increases how valuable you are to an advertiser."
You can read the full ad by clicking on the image on the left. We've already suggested that some of Microsoft's products might make suitable alternatives if you're offended by Google's new policy. If you're not convinced by Google's official response to your concerns, maybe it's time to think about migrating? [Microsoft and The Verge]