Dude, 2012 is the Mayans’ Y2K. It’s simply the end of their calendar; it wasn’t made beyond that year. Although they had a highly accurate solar calendar they did not posess the knowledge to do further calculations so were stuck with an end date for their calendar. As fear would have it, the end of the calendar was interpreted by some as the ‘end of the world’. Unfortunately for the Mayans their world ended 500 years ago. Their calendar simply outlasted them.
Heh, I thought of the Mayans before I saw your post. Some good info in your link!