*EDIT I have two Tab counter addons installed, one that shows th total open tabs and one that shows total open tabs in any window :D so that I do not have to click and check :D I am a bit lazy :p
Glad to hear it! I'm thinking about ways to make it even better.
*EDIT Being able to have multiple browser actions (i.e toolbar icons) per extension could be interesting, I will propose it if I can come up with a nice API.
