I found this after looking around for a survival wiki... it's running the same software as wikipedia, so it should be robust -- but I don't know who put it up, and it appears to be devoid of content.

http://www.survivalwiki.net/

If there isn't a good enough one out there, I can setup this software on a server I own. I would need help moderating and sifting data from this forum and other places into a comprehensive resource though.

H.