We've all received emails from companies we've never heard of that seem to know us. One US Senator is fighting for us. As they say, if it is free then you are the product. We need to worry more about this and express our dislike for this wild west of information.
When Your Data Wanders to Places You’ve Never Been http://www.nytimes.com/2013/04/28/technology/personal-data-takes-a-winding-path-into-marketers-hands.html