Firefox 5 has got a new feature that helps users to tell websites not to track their browsing activities. Generally websites track user’s likes and dislikes and uses this information for displaying advertisements, products and services on their websites.
To disable stop websites from tracking in Firefox 5, Click the Firefox 5 options menu and then navigate to Privacy tab.
In the Privacy options screen, navigate to Tacking section and mark the check box labelled as Tell web sites I do not want to be tracked. Click OK to confirm and save the changes.