Better still – use a scraper (whether there’s protection against this on the server, or if Traveler is happy with this on his server I can’t answer though. I leave a big wait time between files to minimise my use of resources as much as possible if I do do this to a site.).

HTTrack HTTrack Website Copier - Free Software Offline Browser (GNU GPL) (Win/Linux/OSX/BSD/Unix)

Site Sucker http://www.sitesucker.us/ (OS X)

Please feel free to delete this post if this is not acceptable!

Edit

It would probably be better and less potentially problematic if there could be some kind of organisation to this and one user was to do a backup of the wiki every so often and upload it to torrent sites and file lockers.