What they know

When you visit a popular website, that visit may trigger hundreds of tracker files that are used by other companies to track what you are doing across the web. This nice visualisation from the Wall Street Journal clearly shows the extent to which you are more or less exposed to such tracking on a variety of sites.

http://blogs.wsj.com/wtk/

[Thanks again to LJ for this suggestion]

Posted in Thing of the Day Tagged with: , , , ,

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