edit: I'm ok if they take it down. I'll know where to go via the anarki wiki (if someone updates it). And it may actually be better if they do take it down IMHO as it will force everyone to find a place with more control over the setup.
I think if we fork the community site to run on anarki. which I think is more likely than being given control over the Arc Forum, we should consider ways to archive and bring forward all of the stuff on the existing arc forum. It shouldn't be too hard to crawl the forum, though I think there might be some DoS prevention that would slow it down.