I have set this up and seem to get the error where Google thinks it's translating from english to English. I will try again later.
That aside I started reading more here and a thread about how this was pulling traffic but then stopped caught my attention.
Will, did your translated pages ever come back in the serps? You mention version 3 was weeks away last year but I still see you are on version 2.
So is this still worth installing, traffic wise?
Many thanks. Dave.