I see quite a few sites that have been devoted to Think and Grow Rich and its principals but most seem to be trying to sell people into buying other self help programs or getting them to buy something else. I have also inquired into quite a few Think and Grow Rich based groups and found that many are using Think and Grow Rich as a front to bait people into get rich quick ideas. I dont think that Napoleon Hill would like his name being attached to things like that.
Just my opinions.