Comment by RadiozRadioz

Are we really abandoning established, stable protocols because we don't like the serialisation format they use? The practical difference here between XML and JSON is negligible, the value here comes from the ecosystem (which is extensive on the RSS/atom side, and non-existent on the other). As a user, you'll never interact with the XML. As a developer, if you're interacting with the XML rather than using one of the many, MANY, libraries, you're doing something wrong.