Rated 4 out of 5 stars

Great extension that has loads of potential, but isn't quite there yet. Number one thing that it needs, Theme/Persona support. I'm using the Blue Moody Persona, which makes my Firefox 4 like a blueish/greenish color. I'd like the vertical tabs sidebar, which is currently all white, to match the color of my Persona. That would be great to have! Number two thing it needs, and would be a really awesome feature, the ability to hide the sidebar by moving off of it and have it open when you move to the side. That would be the best feature!! I also don't understand how grouping works. When I hit group, it just opens a new tab. Is that because I'm using another grouping extension, TabGroups Manager? That's what I'm assuming. If that's the case, then please add support for it. I hope you make those two major additions and continue to improve this extension. I'll be checking back. Thanks!!

This review is for a previous version of the add-on (0.8.1-signed).