Part of this is that we haven't quite figured out what "publishing platform" means. It's not like a printing press (renting time on machine which applies ink) b

Part of this is that we haven't quite figured out what "publishing platform" means. It's not like a printing press (renting time on machine which applies ink) but also not like a magazine (with an editor pushing a view, his name on page 2). Facebook certainly carries a lot of peer-to-peer communications, but wades deep into deciding what's acceptable. Yet unlike magazines, which were always numerous, they have something close to a monopoly.