I'd like to see "percent of site users that are authors" for the other sites, just to see if there's more of a preference amongst the authors.
Also, just for curiosity's sake... when the respondent picked the same options on "where do you get feedback" and "where do you respond", make the conclusion that "the author responds on the same medium they were contacted on". I bet the mass majority of responses will fall in this category. Nothing conclusive, I'd just like to know if that theory might be right
Oh and like I said on IRC when the query was up, some sort of comparison between time spent playing and time spent coding would be interesting... perhaps survey v2.0 is in order?