There is a great survey out now that really digs into the state of affairs within the Warhammer 40,000 community and what it is that people are thinking. While its only a survey of 1027 people, it does give a great demographic of and snapshot of the community. Check it out
here is where you can see the entirety of it, and download the results.
http://www.totellstories.com/40k/
