Seriously, you're either commiting too many murders and are worried about getting caught, or you have an overinflated sense of your own importance. Hope it's not the first. My dad is always worried about someone "stealing his identity" whenever he reads articles about the data Google gathers. I have to ask him, why would somebody want to steal your identity? You're not that interesting.

On the other hand, Google uses it to alert me if traffic is bad before I typically leave for work, to recommend an occasional new restaurant to me (which has led to some great finds), and to understand when I ask how late Target is open that I'm probably referring to the Target I frequently shop at in Centerville, not some random Target in Ohio.