RSS schema
Jorgen Thelin: Adding in the regexp suggested by Sam for RFC-822 format dates to the RSS 2.0 schema, I have come to the conclusion that I must be missing the point somewhere... although I get the syntactic validation of the data, I have lost the semantic meaning of the schema type model. Am I missing something obvious here?
IMHO, schema only captures higher level syntax. Title and Description are both strings... what semantics can one infer from that? Meanwhile, you did define a simpleType that can be profitably reused.
On a related note: Mark Nottingham is looking for a new element that had the same semantic, but was a proper W3C datetime. This can be found in the Dublin Core module.
Are there any other types for which a regex is desired?