Rated 1 out of 5 stars

Not converted into a full Firefox 3.0 extension, making it unavailable for latest Firefox versions!!! :-(
Moreover, only supports Russian, English, German, French, Italian and Spanish.
Finally, it opens a full new window/tab, not just translate in the right-click context menu like some other translation extensions do!

This review is for a previous version of the add-on (1.3.14).