V2 - A sad downgrade to a once invaluable extension. Rated 2 out of 5 stars
UPDATED July 7, 2008. I used to love this extension and used it for a couple of years without problems. No more. Sadly, version 2 is now badly behaved and awkward to use, so I've had no option but to change my rating from 5 stars to 2. How did it go so wrong?
Fortunately I found Firefox Showcase (https://addons.mozilla.org/en-US/firefox/addon/1810) to use instead - although I still don't like it as Tab Sidebar version 1.