Found Ghostery via Bruce Schneier’s blog. Ghostery is a browser extension for Firefox and Chrome that tracks all the tracking cookies set by a set in a handy little pop-up dialog.
You can also tell Ghostery to block those cookies, which it calls bugs, funny.
Check out what nfl.com tracks, as an example:
Semi-related, if you don’t already read Bruce Schneier’s blog, you should.
