Rated 4 out of 5 stars
Works well, but there should be more settings - I don't like toolbar buttons (btw, icon is awful), so I would like to have this functionality either added to address bar (where favourites icon is) or to the status bar.
And, Ru translation is bad (translated with some software?).
Yes, many of the translations have been done automatically so they are far from good. We'll release an update with the new translations available.
Trying to put the button inside the address bar might require too many efforts for very little benefit, the good thing about the button is that you can place it anywhere you like, so you just have to find a place near the location bar and you're ready. And if you have a nicer icon then we can add it as we might need to review it for Firefox 4.