While Facebook was by far the worst offender, sending a cookie even if you were not logged in, nearly all the others were as bad, sending your login info each time you visited the site. Only Delicious (
delicious.com) provides a simple, cookie-free image. The script will send a cookie, of course, if you click the link to bookmark the site. But even if you remain logged in, visiting the site repeatedly will result in no additional data sent to Yahoo/Delicious.
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Jimmy Dee