Marketers move to using previously offline information

Interesting article in the New York Times looking at the way that marketing and data companies have started connecting previously offline information to customer's browsers.

The information which includes income,purchasing habits and credit scores will

result in a sea change in the way consumers encounter the Web. Not only will people see customized advertising, they will see different versions of Web sites from other consumers and even receive different discount offers while shopping — all based on information from their offline history.