I would really like to see a validation (probe, if true
validation is not possible) of the content @type element.
As I understood it, if not specifically included the default
type of the summery/content elements are "text/plain",
but even Sam Ruby's blog puts HTML in the "summery"
element without adding a "type" attribute to indicate
Consumer's will benefit from having valid content types.
With more "content" elements with different types, this
becomes obvious. Not all viewers run in a fancy web-
browser, so picking entries that are plain text is