How do browser add-ons work?
An add-on is a small program that customizes how your browser works; Firefox was designed to allow add-ons and thousands have been created, including toolbars from companies like Google, Yahoo! and StumbleUpon. If you want to learn more about Firefox add-ons, the Mozilla site has an FAQ. Our browser add-ons do not collect or store information about your browsing history. The TrackerScan add-on sends a list of trackers found on domains that you visit, but no history information is ever associated with your computer. Our browser add-ons have been engineered to work without noticeably affecting your browser performance, but let us know if you have a different experience.