Antone Roundy wrote:
1. In order to show the revision history of a particular entry, multiple revisions of the entry must be able to appear in the same document.
2. Changing the atom:id of the entry with each revision would severly reduce the duplicate detection value of atom:id.
-1.
RSS1.0: "{item_uri} must be unique with respect to any other rdf:about attributes in the RSS document and is a URI which identifies the item."
RSS1.1: "The value of each rdf:about attribute must be unique to the document"
RSS2.0: Doesn't say anything about it (surprise!). But, I don't think I've ever seen a document that duplicated them with your intended semantics.
Robert Sayre