I agree with Martin entirely, but I would like to stress the importance of the "+xml" convention.
Reasons for the "/xml+rpc" subtype: - despite [3023] paragraph 1 and section 7, I believe it was ok to not use the "+xml" postfix this time, because the term "XML-RPC" is the protocol name and "/xml+rpc" would sound only little different (wouldn't this allow for an exception from the rule?)
The whole point of using the "+xml" convention is allow generic XML programs (e.g., parsers, browsers, etc.) to work properly. I am sure that many programs work with XML-RPC messages. For example, users might want to use browsers for debugging XML-RPC. Unless there are good reasons to *forbid* generic XML programs, please follow the "+xml" convention. Cheers, -- MURATA Makoto <murata@hokkaido.email.ne.jp>