Information is big business. Advertisers want to know what you're buying, and I'm sure that you already know about the ways the lengths that they'll go to find out.
What you might not know about, however, is the newest strategy to figure out what consumers are buying: "Anonymized" credit card history. That's right, advertisers might already have paid someone to take a look at your credit card bill.
Anonymized data removes credit card numbers, names and other personal data from the documentation. Supposedly, removing this information makes it impossible to identify a credit card's owner.
A Science Magazine report says otherwise.