Please, don't listen to any rumors about KGB shutting it down, it being moved, etc. Those are all false. (And it wasn't just down for Russia... it was down for the whole world.)
The reason is because we lost power at the data center. Then when power came back, we had to verify a lot of things before we could feel confident turning it all back on.
A more detailed post will be coming later. Again, sorry for the inconvenience. :-/