buggy, doesn't uninstall properly Rated 1 out of 5 stars
I had problems with this plugin on Firefox 15.0.1 on Windows. Bits of the interface would go into an inconsistent state. There is an arrow that points right when the tree is closed and down when it is open. This would get stuck pointing right even though the tree was open and would not close when clicked on. Also tabs would sometimes get hidden and I had to restart Firefox. Finally, the plugin slowed down the rollover tab description, both slow to appear and slow to disappear, in an annoying way. Overall, good idea, terrible execution.
After I removed the plugin I found that my old tab behavior was not back. Now, every new tab was opened at the extreme right of the tabs, very annoying. I had to research and learn that an internal variable had been left in the wrong state. To fix it I went to "about:config" and changed "browser.tabs.insertRelatedAfterCurrent" from "false" to "true". At this point my normal tab behavior was restored.