According to an employee working at Family Radio, 89 years old, Harold Camping has spent approximately $100 million to promote and advertise his May 21st Doomsday prediction.

Most of the money has come, suprisingnly, not from donation but from the sales of property according to International project manager of Family Radio Matt Tuter.

A lot of reporters have got it wrong, he said in the interview. The largest portion of money did not come from donors. 

All that money was used to make a fool of himself to the whole world, Tuter added.

The non-profit organization received $80 million in contributions between 2005 and 2009.

Their latest IRS filings shows almost all funds are from donations, with $18 million in total in 2009.

The 89-year-old Christian broadcaster also predicted that the world would end in September 1994, but didn't spend quite so much that time around as he did for the May 2011 campaign.

Camping has stayed in his home in Alameda, California since his prediction.