[via Dave]: Jeremy proposes RSS-Data. I'm sure my mind is still completely in another planet, because I've read his proposal three times and I don't get it.

It mentions namespaces. It mentions XML-RPC. If you use namespaces, why do you need XML-RPC? And how would a namespace define a "generic" data format when the discussion is specifically about "vertical" applications (which would, as far as I can see, require each their own namespace)? And if the XML-RPC stuff is used, it becomes really really generic. How is that "vertical" or specific to different types of data? I get the feeling that it might be some kind of tighter XML-RPC representation to perform web-services-style data transfer... but ... but...

But as I said, quite obviously I don't get it. At all. It will be interesting to see more info on this. Sounds cool.