This add on called Collusion it basically shows you all the websites that are tracking your movement in realtime
Its pretty creepy
Firefox Link - http://www.mozilla.org/en-US/collusion/
Chrome link - https://chrome.google.com/webstore/detail/collusion-for-chrome/ganlifbpkcplnldliibcbegplfmcfigp?hl=en
Its pretty creepy
Firefox Link - http://www.mozilla.org/en-US/collusion/
Chrome link - https://chrome.google.com/webstore/detail/collusion-for-chrome/ganlifbpkcplnldliibcbegplfmcfigp?hl=en