Google tracks you. We don't. An illustrated guide
I think it's some valid info here, and it's certainly worth being wary of the info Google collects, but I also sense a little bit of FUD here. The whole "...which can often uniquely identify you" makes me feel like this is playing on fear a little too much. It's not like that "big ebony booty" search is going to come up in a job interview any time soon guys.