facebook cookies

[incisor]

Facebook Cookie Tracks Users Even When They’re Logged Out | Gizmodo Australia (http://www.gizmodo.com.au/2011/09/facebook-cookie-tracks-users-even-when-theyre-logged-out/)

for mozilla users, this will help.

https://addons.mozilla.org/en-US/firefox/addon/betterprivacy/

[abaddonxi]

I wonder if Ghostery will do the trick?

http://www.ghostery.com/

[Amber]

This should help for chrome users.

https://chrome.google.com/webstore/detail/ejpepffjfmamnambagiibghpglaidiec