It's The End Of The World As We Know It...Again
Research into historic and contemporary doomsday forecasts, from a skeptical point of view. Humorous but informative, and with list of links.
http://www.geocities.com/Athens/Oracle/9941/index.html

End of the World Predictions
A list of end-is-near predictions, some already past and failed.
http://www.religioustolerance.org/end_wrl1.htm

Gammadim Vision-Financial Ministry and Prophecy
Prophetic revelation with help and advice in obtaining the 501c3 exemption and incorporation assistance for ministry. Evangelism Outreaches: Convoy of Love and Convoy of Hope (Many of this prophecies already passed.....none of them true)
http://www.angelfire.com/fl3/gammadim/

Nowra, New South Wales: The Order of Saint Charbel
Messages supposedly given by Jesus and Mary (Our Lady of the Ark) to William Kamm, "the Little Pebble". You'll find many examples of failed prophecies here.
http://www.shoal.net.au/~mwoa/index.html

The Doomsday List
A list of predictions and prophecies, with actual dates, for the recent past and near future from all over the Web. Most of them have proven false. This website is dedicated to unmask false prophecies.
http://www.2think.org/hundredsheep/skeptic/predictions.shtml