I agree with all that has been stated above. Porn is a wonderful outlet when there is not "outlet". Its a great addition to foreplay too. I enjoy both visual stimulation with porn as well as erotic literature. The line must be drawn to underage pics and vids as well. For masturbation purposes I can't say whether or not a partner needs to know but I'm sure it doesn't hurt. We all need our release at times and sometimes time doesn't premit coupling.