I always wondered how many tabs my main Firefox window had, and now I know: 535 tabs. I knew there were a lot, but maybe I should clean up. :-D And I have 6 more FF windows...
For 5 stars, make the icon respond to clicks and list all open windows with the count of tabs next to them and possibly a total count beneath. Clicking a window in this menu should bring forward the clicked window (if possible).
