Me. I think its fake. The mayans could have been killed off by their enemy or something. And some random guy comes up to and starts spreadint the "End of the world" Making millions of ppl freak out.
We will only know when the time comes. Until then enjoy your life.
It's not gonna happen, who ever made probably didn't have any more room (like what Gonzomon said), got tierd or was killed by the Conquistadors before they can finish creating the calender.
If the end of the world was supposed to happen, then everyone should already know how it's supposed to end. Otherwise, let's just forget it's going to happen and conclude that the Mayan calendar is just going to repeat or something like that.
