The most striking thing (for me) was one of the commenters who assumes his desire to ejaculate on partners' faces, etc. is evidence that it's an innate behavior, rather than one conditioned by internet porn use during impressionable years. It's tough to correct the myth that porn "just helps you find your innate proclivities," rather than (in some cases) radically altering/conditioning your sexuality.
Meanwhile, the research is showing that half of porn users report escalating to things that were formerly uninteresting: Studies Find Escalation in Porn Users. Too bad the latter isn't common knowledge.