Comment on Web Developer Extension

well... I use it! in my opinion these addons add value to the software, like MailTags does for Apple Mail. Why not posting them here?

For me as a web developer it´s one of the killer arguments to use Firefox. Add Firebug (https://addons.mozilla.org/de/firefox/addon/1843) and you have the best environment to debug and analyze your sites and check css and css inheritance!