That's a good question. I don't think I'm including reddit here because those are moderated spaces on a fixed topic. I consider social media more people posting

That's a good question. I don't think I'm including reddit here because those are moderated spaces on a fixed topic. I consider social media more people posting top level things that others can choose to follow directly. So social media is more like people meeting and talking, whereas reddit is more like an interest-based society meeting and talking.