In the USA, “Companies and marketing firms have been gathering information about customers and potential customers for years, collecting their names and addresses, tracking credit card purchases, and asking them to fill out questionnaires, so they can offer discounts and send catalogues. But today we are giving up more and more private information online without knowing that it's being harvested and personalized and sold to lots of different people...” ..."It's not about what we know we're sharing, it's about what we don't know is being collected and sold about us." (
CBS News, March 9 2014)