Stopping people from jerking off eh... common. ^_^ Maybe if you made a virus that stopped CHILD PRON (think it's been done a few times) or something that disuaded rape, murder, or general stupidity. Hell, if someone wrote a worm that did automatic updates and patches properly (as versions have been done, but it never really worked and just ate your bandwidth) that'd be a neat feat! Oh well, I like pr0n.