Closing a market... This is not a good thing to do in a normal situation, but I guess we are beyond that by now. Confidence is low enough for this to be a "grab a beer and some popcorn and see what happens" kind of thing.
Speaking from the EUR-Region: bitcoin-24 and bitcoin-central both are in the 50 EUR range now. Order book is getting empty, huge spreads, everyone tries to be smart when nobody knows what to do.
Good thing I can afford to lose the money I have in my BTC-portfolio. Obviously, not everyone can do that. Should I do some arbitraging? I could make 200% on some small markets