Rated 4 out of 5 stars

Nice little addon. But it misses a few things:
(1) Right click to stop all buttons isn't intuitive because right click is usually for menu. I prefer Ctrl + Left click or Shift + Left click, which is consistent to how reload button works.
(2) It would be nice to have a new tooltip to remind the extra function added to the Stop button.

I have hacked the code to add the above functions too for my friends and me. If you find the above functions useful for you too, you may download this hacked addon:
http://www.mediafire.com/?mjht2lnnjwx

To developer, feel free to implement my codes into your existing addon. Thank you for your work. :-)

@ Reverse Quick, it works fine in Firefox 3.5.1. "Customize" toolbar function is also working. Perhaps there are some conflicts on your Firefox.

This review is for a previous version of the add-on (1.2.1).