How about a wiki for the GNU OS? Something like the wiki Thomas Schwinge set up for organizing the Hurd info recently. I can set up a DokuWiki site for the GNU OS on the box where I host Advogato if it sounds like a good idea.
Most Wiki are bad since they require people to have network access to be able to edit them, and a web browser; this includes DokuWiki. I'd rather see ikiwiki or similar which stores files as plain text, which you can put into a CVS repository or similar.
