Rated 4 out of 5 stars
A great addon. I am quite satisfied with it. But, here are a few suggestions to make it even better:
1. Replace the text button with an icon that takes much less space.
2. On rightclick over the status bar button, the context menu should appear over an opaque(maybe white) background.
3. Provide an option to place the button on any toolbar and not just the status bar.
I am raising donations to make enhancements and these first two items are already on the priority list. #2 is a regression: it worked fine since Firefox 3 but suddenly broke in FF 18.