Here is a development that erodes privacy, which Tor can reverse. >At the Open Data 2007 conference in New York today, David Cancel, the CEO of >Compete Inc. revealed that ISPs happily sell clickstream data -- and that it's >a big business. They don't sell your name -- just your clicks -- but the >clicks are tied to you as a specific user (User 1, User 2, etc.). > >How much are your clicks worth? About 40 cents a month per user (per >customer)... and the Compete CEO estimates that there are 10-12 big buyers >of this data. In other words, your ISP is probably making about $5 a month >($60 a year) off your clickstreams.
More at http://internet.seekingalpha.com/article/29449
