What do you think it is about human nature that causes the eternal September effect?
erosion of community norms, due to an influx of new users faster than they can be integrated with the existing community
Is that everything? Why do people consider a platform good before those norms are established?
the platforms I consider good are all good because of the people, so probably that? maybe in combination with size? I think highly connected small networks significantly below Dunbar's number incentivize good communication due to repeated interaction. I don't think the platform matters as much as the people.