Rated 5 out of 5 stars
This is perfect! I only just installed Minimize-addon-bar but am in love with it, the appearance of firefox is much better now, and feels less cluttered than if I used the standard addonbar.
My only annoyance is that old addons that havent been updated to work with the addonbar and still expect the statusbar dont show up in this addon. PermitCookies/LikeThePage etc...
Oh, and the addon covering the bottom of the scrollbar is a shame, but not the end of the world. Would be nice if could be fixed.