nostr:npub1dznhhga669k20k8rjzmls6lu5uhkus9s3xcg3t2f3quswnc2sdqs5v4dfn This is a great chart John. I’m going to claim 3rd because Spotify is a single use namespace for one vendor who’ happens to have a zillion feeds. Nobody else uses it.

And Atom is a structural thing that nobody actually chooses to use. It just comes by default in many CMS’s because the W3C recommended it in their validator. 😊