This is very interesting information about common websites that are sharing information about us. I don’t worry about it too much because I don’t seem to have much in the way of unwanted advertising showing up in my email or anything. As a business owner, I know how challenging it is to reach a target market now. I’s like to think that most of this data sharing just aimed at helping businesses pitch ads that are relevant to people so businesses can get customers at an affordable price per customer. I don’t see it as an extreme security issue to be worried about. That’s just my perspective on things, you may not agree.