[gramontblanc]

I think many (most?) "Digital natives" already found a superior answer to these problems; pull people you're actually friends with (defined by whether they'll join your small group chat) into small group chats, and blog the daily experience of life mostly into those small chats.

Solves many privacy problems (but not all), avoids Dunbar number violations, and gives a genuine source of social attention (which humans need) from people who are more involved in your life. Getting enough social attention (and giving enough in turn) seems to calm a kind of anxiety that might otherwise suck people into social media.