The new film "Shame," in which Michael Fassbender plays a sex addict, has been getting rave reviews. And Newsweek recently ran an article about the "sex addiction epidemic."

Over at Salon, Tracy Clark-Flory interviews clinical psychologist David Ley, author of the upcoming book "The Myth of Sex Addiction," about why this is all a bunch of nonsense. It's pretty interesting, and you can check it out here.