I don’t consider Reddit, HN, etc. to be social media, at all. There might be media, but there is no social. Social requires a network of real people. You can’t prove that anyone on these sites is a real person, other than yourself. Maybe I, and everyone else on here, is a bot. When everyone is anonymous, there is no network. And, not only is everyone anonymous, but there are no connections. To the best of my knowledge I have never read a post or comment from the same “person” twice. Every single interaction might as well be (and probably is) our first interaction on the site, ever. Complete strangers passing in the dark.