I wrote a schematron for Atom 0.3. http://www.kbcafe.com/rss/rss.schematron.xml It also includes schematron schema for RSS 0.91, 1.0, 2.0 and OPML and a bunch of RSS modules. It's not perfect, but a start. There's also an online validator based on this schematron. http://www.kbcafe.com/rss/?guid=20041030111147 I'll update it in the spring when Atom 1.0 is release :) Hope u like,
Randy P.S. Sorry, I'm not actively following the list, so CC me on replies. Thanks.
