Awesome Rated 5 out of 5 stars
One of the reasons I'm back to Firefox from Chromium. Makes you wonder why it's not built in all browsers. Tabs make much more sense when you can have a lot of them open and still be able to read the titles :)
I just love how it puts tabs opened from links under the parent automatically, that way you can easily track how you got to a tab.
Also ++ for auto-semi-hide, it helps on old 4:3 monitors.