We recently wrote about how you should probably be more nervous about the data your ISP is collecting rather than what Google is collecting, because your ISP has access to a lot more data, and the data it has isn’t data that you chose to give, as in the case of Google. Plus, ISPs have a long history of selling that data. Now, a new study is showing that most people have no idea that their ISPs track and sell their data, with many believing that an ISP would need to first let them know if they were doing that. In fact, many people are quite concerned about how that data would be used, not realizing that it’s already being sold. And, of course, it’s not just being sold to ad companies like NebuAd and Phorm, but to Web site-tracking firms like Compete and Hitwise.

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