Looks like we won’t see so many repeated items in our news aggregators if RSS 2.0 catches on:
Now, for 2.0 feeds, we check if the item has a guid, and use that as the identifier, assuming it won’t change even if some of the properties of the item change. This is true of the 2.0 feeds that Radio produces, and of Scripting News in RSS. We welcome other aggregator developers to use this new feature in RSS 2.0 feeds.
To quote Sgt. Schulz, “I know nothing” about RDF, 0.9x vs. 1.0 vs. 2.0, namespaces, and modules. I’m a writer, damnit.