Forget unstoppable psychopaths in hockey masks -- on Friday the 13th, the biggest terrors sometimes hit our wallets. No, the Great Crash of 1929 didn't start on a Friday, but a fair number of financial disasters did.
Oh, no! It's Friday the 13th! A day that has tens of millions of Americans on edge and awaiting disaster. But all this worrying and fear leads to more than just gray hairs -- it also leads to hundreds of millions of dollars in lost business.