I agree that the "unanticipated follow-ups" are a serious design problem that will distort some of the results, and in general, that the technical implementation leaves lots to be desired, especially in terms of usability. That said, there are many questions in the survey which will yield useful data, or data that is useful with caveats. See my summary here: http://en.wikipedia.org/wiki/Wikipedia_talk:Survey_2008#Some_interim_comment...