Of course 2012 isn't real, all predictions so far have been wrong.
I wouldn't be surprised, everybody reads it online these days...or at the very least, most people.
I think DC will end in the next 300-500 chapters or so. I would say next 200, but I think there's going to be a BO arc, and if that happens they'll need almost twice as many chapters in order to cover it. Thus, I'm going to assume it'll end in the next 300-500 chapters. Things have been speeding up recently, and I think Gosho Aoyama is losing money as well. Let's try to support him, shall we?