Rated 3 out of 5 stars
I know this is minor in terms of development, but I noticed this promising extension needs a more correct localization (currently a number of locale files are filled with English strings). I suggest you should submit on http://www.babelzilla.org where volunteer human translators would help for free. We are a community of translators dedicated to the translation of mozilla-family apps extension with an online translation system.
(Note that if you wish to submit, you'd better include the en-US locale only and remove the other ones, because they will be automatically presented to volunteers as "fields to be filled" on our system.)
Let us know if you need more info.
- jean-bernard aka Goofy
BabelZilla Admin Team