The anonymous element online, too, is something that's significant. People don't have their real name, they're under an alias or it's a bot. You don't even really know, at the end of the day, if that is really the person.
Of course, we see horrible instances of this being used for trafficking, luring and all of these really sordid things, but when there isn't a clear identification even of who the person is, I don't know how you can attempt to stop them from what they're doing.