Okay, so has anyone been able to get in touch with the SO admins? I'd love to bring some challenges back, if possible (most of them don't rely on a database - luckily).
Only thing is .. I don't really want to host such content on my VPS

I think it's configured quite alright, but I'm not really up for any unpaid penetration testing ;)
If the vox populi would decide to do such a thing (to host someone else's challenges without their consent) how should it be done? I would just go for a generic front-end framework as opposed to restoring the site in all it's glory (content is one thing, but I certainly wouldn't like to see a site I built completely cloned and ran by someone else)