Naked Truth Investing: The prediction scam

This is the part of a new series of columns called "The Naked Truth," by retirement expert Dan Solin. Please bring him your questions, in the comments box, and he will answer as many as he can.

Want to make a lot of money in a down market? Write a book predicting a financial meltdown.

It worked for Howard Ruff. He racked up huge sales with his book, How to Prosper During the coming Bad Years, written in 1979.