[frasertimo]

Take a look at http://www.yourbrainonporn.com/. It's an entire site dedicated to explaining the effects of porn on your sex drive and encouraging men to give it up. Lots of links to supporting evidence there.

The article is really more about the author's personal experience with giving up porn and that of his readers. I gave it up myself earlier this year, and have noticed a definite improvement. Don't have issues with getting/keeping it up. I don't think my results were as near as impressive as others were either, as I wasn't anywhere near watching it daily.

As for the book on how to attract women, I'm not sure what advising guys to give up porn has to do with it. Wouldn't you be fine with guys watching it, because that encourages them to idealize women and fantasize about sleeping with them more? Giving up porn would cause them to become less obsessed with their sex life and focus more on the rest of their lives. Don't know how that means they're more likely to buy dating advice. Which is fine by us because we're gearing the site to be less and less about dating these days :)