I guess that the world did not end on May 21, 2011. There is always the next round, the Mayan cycle of 2012. Alternatively, there is a nice if brief summary of various predictions of end of the world at http://religion.blogs.cnn.com/2011/05/22/life-goes-on-doomsday-believers-on-the-morning-after/?hpt=C2
Sayings of the Preachers 
When number of day matches month and year
And passage of millennia equals their sum
When far is more and less is near
Upon that day our deliverer will come.