It's fascinating to see and understand the unwritten rules, and have them written. Sometimes a rule it's obvious to some, others like me, find them just weird.
Oh I see, even if chats are organised by person, the conversation has ended (even if improperly) if X time has passed. So people organise mentally the conversations as individual interactions, it is the social component that overrides the digital organisation.
That does sound amazing. Do we know if they lose any effectiveness?