I'm of the opposite view: If I'm going to see ads, I'd rather they be irrelevant. That way I at least have a little more assurance that my privacy was not violated in order to produce them. I don't care what the content of the ad is, because I will not buy a product from an ad, so a non-privacy-violating ad that I ignore is strictly better to me than a privacy-violating ad that I also ignore.