We would have Twitter the API, and Twitter the umbrella network. You might want to promote a sub group into the larger network, or you may not - similar to redd

We would have Twitter the API, and Twitter the umbrella network. You might want to promote a sub group into the larger network, or you may not - similar to reddit in a way. I imagine invite only groups, time-limited groups for concerts/conferences/sporting events, location-locked groups that you dynamically join and leave as you move around. I may just be describing iMessage or Slack at this point.