I've never posted on them in my life but apparently they've shut down without warning. Some of my friends on Facebook are really upset - especially as they had friends on there and had no chance to swap details before it happened.
Would it be possible for us to provide some sort of a meetup thread / topic area for them? There's lots of chat on Twitter about it to alert them, and then they may stay in their own thread PM-ing each other so they can stay in touch and then vanish - or they might stay here for good which would be nice as well?