Our family gang doesn't just "chat" we all do stuff on era like other people do (pk,base,streak,events..) most of us are friends so we just talk about the stuff that goes around the era community or stuff in general. If you want to join ask the gang leader of box and he will recruit you if you're "worthy" enough lol.
All the other gang allies like dad, mom, cat are just for close friends and box is open for anyone.