The mechanics of something like Facebook are that you have your “friends” and people can engage as much or as little as they like or dip in and out. I find I’ll occasionally post something that relates to overlapping friends circles but people can easily ignore stuff that doesn’t really involve them. It’s a very different model from a much more deliberate mailing list or SMS chat.

I do have some group chats and email threads but there’s a broader that extends beyond that which social media apps can be useful for.