Rated 4 out of 5 stars
Firefox 10 removed Accept-Charset, but my horde-based webmail still wants it (or it would show ASCII only), so this extension is very helpful! I couldn't find the "Start" button the first time, but I tried the extension the next day and found it. Misusing a picture in a toolbar as a pushbutton is bad design. The start button should be next to other buttons, maybe with a "1 in 0" icon. Perhaps "start on browser startup" checkbox would be nice too, as the button doesn't give confidence that it would happen. Also, the addon toolbar is stretched vertically by the extension. The author should look at AdBlock Plus, which takes less vertical space in the addon toolbar by placing the arrow to the right of the icon, not below it.
Thanks for the great feedback. I'm working to improve how the addon toolbar is used by MH, a new version will be out soon.
I'm not sure what you mean by a "1 in 0 icon". Please open a bug http://bit.ly/eppJxg to provide more details.