I didn’t know about the O’Reilly Early Release program. Basically, it seems you can buy a book as it’s still being written, and give feedback while receiving updates and rewrites.
Nice idea. I’m tempted to buy some of these.
Dave Winer is considering an official(?) JSON flavour of RSS.
I just want to say here that I like RSS, for what it is, and what it does, and I like JSON to actually work with, because parsing XML is still a faff. So it gets my vote.