This is the list of extensions installed in my Firefox: DOM Inspector, GMail Notifier, FoxyTunes, WeatherFox, SwitchProxy Tool, Live HTTP Headers, FlashGot, Copy Plain Text, Search Status, Bandwidth Tester, Translate, View Cookies, ColorZilla.
(hide) If you want to save on bandwidth you can reduce the amount of information that shows up in your pages in the Settings. Try changing the number of games in the main page and the number of messages per page. (pauloaguia) (show all tips)