Charter Will Monitor Customers’ Web Surfing to Target Ads

Charter Communications, the fourth-largest cable system in the United States, has started telling its high-speed Internet customers that it is going to keep track of every site they visit on the Web.

The cable company will sell the data to a firm called NebuAd, which in turn will use it to show ads to Web-surfing Charter customers that are meant to be related to their interests. (Visit a knitting site yesterday and see yarn ads today.)

Charter started sending letters out to several hundred thousand customers in four markets: Fort Worth, Tex.; San Luis Obispo, Calif.; Oxford, Mass.; and Newtown, Conn. (The letters were first reported by DSLreports.com.)

Charter said it will start testing the system within 30 days and will make a decision whether to roll it out to its 2.8 million Internet customers a few months after that.

Full story here.