Here's the issue with data mining. They know more about you than you know about yourself. If you want confirmation of that call a bank or brokerage and pretend you've lost access to your account. The detailed information they will ask, far beyond anything you gave them is all you should need to hear.
know this, everyone will leak or sell the data they have on you. Once your Uber-Profile is assembled and created your only protection from identity theft is to get a new *witness protection style* identity. This dirty little secret is already here for many. That's why you should care, once the horse is out of the barn it's too late, as everything that's been collected is forever just like anything on the Internet.