Hi Platonides, thanks for your work on this, it looks great.
Just a couple of small details: I thought about having our suggestions ("Select all that apply, "You can leave that field empty", etc.) moved below the questions, and marked with a grey font (I see you use CSS for that, so it should be easy enough.)
I would also remove the <h2 /> for the Introduction part, and would appreciate it greatly if you could replace the Toolserver logo with our own (WLM). I would also suggest setting Vector as the default skin for the survey.
And a few more questions: will the survey automatically recognise the language of the user, or will we need to have a languages box at the top of the page? How about getting acccess to the source of the survey, and its results, where would those be stored?
Thanks for your work on this, it's awesome!