ben_thatmustbemeinteresting bit I came to when working with pubsub, I was planning to extend my hub to give the option to receive different formats from the pages (the hub would process it into a json doc if you specifically requested that when signing up)
aaronpkif I'm a random subscriber and I come across a website that advertises its hub, I expect that hub will behave the way the spec says, and that I'll get the notification in the same format as the topic URL. Without that, we don't actually get interop in the spec.
aaronpknow if you're talking about making something like superfeedr which lets you subscribe to arbitrary URLs whether or not they support PuSH and link to a hub, that's totally outside the spec and you can do whatever you want.
gRegorLove!tell tantek Noticed with 2016/LA and 2016/MIT2 the pages didn't have the Participating sub-section which links to the code of conduct. Should make a note somewhere to ensure that's included on IWC pages.