The web site Judgementday2011.com says The Rapture did happen, but nobody noticed:
Jesus has come, few were saved, even less noticed his presence, but May 21st was still Judgement Day. If you are reading this blog, then you were not saved by Jesus in the Second Coming, and have been left behind during the End of Days. There are just five months remaining until the End of The World on October 21 2011. Prepare yourself for the End Times now by stocking up on water, canned goods, and appropriate clothing before the End of The World.
If bottled water and baked beans will be useful, how is the end of the world going to differ from any other earthquake or tornado? Will canned food and a heavy parka really help against the Wrath of the Lord?
Oh, I just noticed - the final irony - buy the T-shirt!