Scam artists exist because consumers are so easy to fool.
As a professional in the field of nutrition, I have had numerous opportunities to get on the ground floor of selling or promoting a new supplement or weight loss technique. Friends who know of my work often send audio tapes and literature thinking I should be interested and I am. I want to know what makes them so interested in the product or so gullible. It usually is the financial gain. These friend think someone with my credentials would lend the necessary credibility to make us both money and still help the buyer with a beneficial product.