Developer reply by Erik Vold
Rated 4 out of 5 stars
You've improved the add-on by removing legacy code, yet you've kept the add-on bar icon. Even worse, I can't find any way to add the icon as a toolbar icon and remove the add-on bar icon (I wouldn't even have it enabled if it wasn't for this add-on), which is completely against FF4's design.
This review is for a previous version of the add-on (0.1b9.1-signed.1-signed).The toolbar button is added to the add-on bar by default, if you customize then you can move it where ever you choose.
http://kb.mozillazine.org/Toolbar_customization_-_Firefoxr
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