I got suckered into this one too. Apparently it only works if you eat a high fat diet, which I never have. I eat too much sugars and my serving sizes are too big, and I think after the whole "Fat is bad" slam we've had for the last 30 years very few people actually eat enough fat in their diet to justify it.
Waste of money, I've lost more weight just ensuring that I drink my 2L of water a day!