Firefox 4.0 has been released on March 22nd, 2011. The key updates in this version takes in major improvements in the browser’s performance, as well as in standards support, and a restructured user interface. Users are surely going to enjoy better experience with its tab placement as well as functionality including its dynamically changing stop/refresh/home button next to enhanced HTML5 and JavaScript support. Furthermore to provide users more functionality and customization many developers have created loads of add-ons compatible with Firefox 4.0. Here are 25 great add-ons to enhance your firefox browsing experience.