I recently met some people who swore that photoreading was legit and that because of it they'd read about 10 thick books per week. Not knowing what it was, I looked it up and immediately didn't believe the premise. There's something to be said for speed reading (at a rate slightly faster than normal) but photoreading just seems ridiculous. Not only can no real content/meaning be gained from doing it, but no mental models can be formed. I'd love to be proven wrong, though...
I once read a about a small scale study on some super-duper speed reading method. By small scale I think there were like two participants. One was a an expert in the method. The other was the guy doing the study. There were 3 main findings.
1. Yes, you will "read" much faster.
2. If you take a standard reading comprehension test on what you've read, you will score much lower.
3. If you don't take such a test, you will be under the mistaken impression that you absorbed more than you did from the book.