Facebook on Firefox will definitely give you the nice experience with the help of following 5 Best and Useful add-ons. Lets see all these add-ons that are compatible with Latest Firefox 4 Browser. Lets tweak facebook. 1.Facebook Toolbar Integrate your Facebook life into your browser.Search Facebook from anywhere,Get Notified,Share content and upload photos easily. Captioning and Tagging the photos are very easy with this...