Mark Nottingham wrote:
So, the relevant question seems to be whether any browsers do something interesting with +xml media types;
No, the relevant question is whether +xml media types can be reliably dispatched without any knowledge of a specific scheme. I don't know the answer, but I do know that it's a question for the RFC that supercedes 3023, not Atom.
If I tell NetNewsWire to GET something in the subscribe dialog, my dispatching instructions are clear. Everything is a feed. Making up rules for application/xml, text/xml, and application/octet-stream will require superceding some RFCs that I'd rather not mess with.
Robert Sayre