Rated 5 out of 5 stars
I use it to display the contents of my RSS feeds in a popup. Without it I never would use the RSS feeds. It is a great add-on. Thank you a lot for it!!!
At the moment I use this with Firefox Shiretoko (3.5) and it works without any problems. If you use the All-in-One-Sidebar with Firefox 3.6 it might not work. But this is a problem of the All-in-One-Sidebar - a new version for Firefox 3.6 is still missing.