Back in the early '00s, I designed a social network architecture which was fully decentralized. The only people whose information I'd have would be my friends',

Back in the early '00s, I designed a social network architecture which was fully decentralized. The only people whose information I'd have would be my friends', and vice-versa. I never built it, mind you, it was all a thought experiment. But I still think that sort of thing ought to be how it works.