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Jon Udell: For a while now I've been sending out RSS channels with things like <pubDate>, <blurb>, and <fullitem>. Nobody's complained, so apparently it's not breaking any existing aggregator. I really would like to see the day where compatibility to the spec was as important as "works with the current version of the software provided by the spec author". This reason why this strikes such a strong cord with me is that as a contributor to a SOAP toolkit, I don't want SOAP to be defined in this way.
Meanwhile, here is the perspective of an author of another aggregator.
FYI: The RSS 1.0 specification was released on 2000-12-06.