I have to support DC here as a trainer/nutritionist myself, and say that yes, his methods do work. He's been in "biz" just as I have for just about the same number of years if memory serves me correctly, so it's evident he is doing something right.
You don't last in a virtual world, or any world for that matter, if you are not getting results. DC and his methods get results, just as I get results with my methods and what I specialize in. He and I have different areas of "expertise", but we both excel in what we do.
~SC~