First of all, it is NOT automated nor automatic - you have to MANUALLY select the option. I even had to Google how to find the thing !
Secondly it is ridiculously slow ! It took >30 seconds to translate the front page of Spanish Wikipedia !
Thirdly it doesn't even support Chinese or Japanese !
Firefox users must suffer. They think so! Oflline translation! WHY? The browser is for internet! Why should I install all languages if I use e.g. Polish once in my life? Please turn on your brains sometimes!