It's only been down a couple of times for me, but I've heard some people complain about it being completely inaccessible, to the point where they blame Plan 9, because "it's old and doesnt's scale" and shit like that.

I was thinking about doing a full copy of the whole site, but I'm not sure everything in there is free enough and also the size, which could be bigger than expected. I may end up replicating the documents, harmful and Hotel Genius sections, which are so worthy :D