I too have been down the Tom Demark indicator(s) rabbit hole and lost money

I think the main way he makes money is to try to convince people of the value of his trademarked indicators in order to license them to Bloomberg.
http://www.marketstudies.com/cm/content/Bloomberg.asp

I think the main way he makes money is to try to convince people of the value of his trademarked indicators in order to license them to Bloomberg.
http://www.marketstudies.com/cm/content/Bloomberg.asp
