Would a collection of group chats (not even necessarily all on the same service) be an example of the sort of thing you’re thinking of? Each chat is small and contains people who directly know one another; but each person may be on any number of different chats. Information only leaks from one to another if someone explicitly forwards it, not by algorithmic recommendation.
Would a collection of group chats (not even necessarily all on the same service) be an example of the sort of thing you’re thinking of? Each chat is small and contains people who directly know one another; but each person may be on any number of different chats. Information only leaks from one to another if someone explicitly forwards it, not by algorithmic recommendation.