I've read some parts of this website before and also wondered if this guy is a joker, or maybe there's some validity to his approach. I think the bottom line is that his approach requires a lot of time and dedication, which most people are not willing to commit. On top of that, he says you may not see results for a long time...I think up to 8 or 9 months. But it does seem that he's done his homework and knows a decent amount about hairloss.
I also noticed he doesn't put any advertising on his website, or try to push any products...so it doesn't seem like he's out to make a quick buck. I tried his exercises for a couple of weeks, but never really stuck to it. Let me know if you give it a try...I'd be interested to see how it goes.