PubSubHubbub!

All,

First of all, I owe most of you an apology for the radio silence.

I have been working on the PuSH spec several times over the last couple
months and I think it’s now mostly ready get your feedback.
It’s ben pushed to Github and ou can view the HTML directly from there:
https://w3c.github.io/pubsubhubbub/index.html

One of the thing that people complained about is the lack of clear
definition of what the diffing mechanism, should be.
Some resources (RSS/Atom) have more or less clear meaning of what diffing
is, while others like JSON are much more agnostic.
How would you transcribe in the spec so that there’s a clear specification
for subscribers to understand what they can expect while
still leave the door open to more custom mechanisms when appropriate?

I also want to thank Sandro for his early feedback and infinite patience as
well as Aaron Parecki for his feedback and help too!

-- 
Julien Genestoux