This is a terrific article from last fall that deserves more exposure (and gets it here via Jan Boddez). In a nutshell, it starts with a discussion of why the author has chosen to work less openly online, and evolves into a discussion of 'system 1' versus 'system 2' thinking, how the former finds enemies lurking around every corner, and how social media made this the default ("when something is easy, people will do more of it"). It talks briefly at the end of alternative 'friend of a friend' models. For a contrasting view, this episode of CBC's Spark on Web3 yesterday makes the point that the web's dystopia is not caused (and solved) by technological factors, but by human ones. To me, the question is (and has always been) how we put limits on the excesses of scale-free networks.