Privacy and Security Fanatic: Visa, MasterCard may take offline buying history and drag it online for targeted ads
Network World reports: Do you carry cash, or do you buy almost everything with a credit card, perhaps with a debit card backed by a credit card firm such a Visa? If you swipe plastic to pay, do you consider your offline transactions to be private or separate from your online life? If you use Visa or MasterCard, then those credit card companies know a great deal about you and would like to start using what they know about your personal purchasing history to throw targeted online ads at you.