Portable Porn: Smartphone Users 20 Favorite Adult Web Sites

Where do mobile users find these sites? Few, if any, of the top 20 mobile porn sites are household names like Playboy or Penthouse — the one were most familiar with is YouPorn, which we calculated last month was the “X-rated YouTube.” This is the “long tail” at work. Fair warning: These sites, of course, are not work-safe.