An 'Anti-social network', so to speak. I too, have thought of this before. The main feature, I suppose, would be that interactions revolve around smaller groups.
Susan Cains book "Quiet" is an exceptional exploration of the field, and well worth reading to breakdown some of the misconceptions about introverts.
Anyway, somebody offered you a book to read. You chose to call the ideas in it ludicrous without reading it. Not sure why.