Your ISP may be selling your web clicks
David Cancel, the CTO of the web market research firm Compete Incorporated, raised eyebrows at the Open Data 2007 Conference in New York when he revealed that many Internet service providers sell the clickstream data of their users. Clickstream data includes every web site visited by each user and in which order they were clicked.
The data is not sold with accompanying user name or information, but merely as a numerical user value. However, it is still theoretically possible to tie this information to a specific ISP account. Cancel told Ars that his company licenses the data from ISPs for millions of dollars. Your ISP may be selling your web clicks
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