As well as my little What topics do you want to read here? survey, there’s a more serious Free/Open Source Participant Satisfaction Survey by Brenda Chawner for the Victoria University of Wellington New Zealand which you might like to answer. It seems that the results will be published under CC-NC, which is less than great, but better than not sharing them at all.
Shame I don’t know of a third survey. The joke doesn’t quite work without it.