@mike Yes. There's standard.site that's being worked on across the blogging platforms I mentioned, and there's lexicon.community, which is an independent board that helps simpler interop happen.
Apps can also interop with the permission of the user by using the data in their PDS. For instance, blento.app uses a user's data across apps to build a webpage of all your ATProto content, and they didn't have to work with any of the apps directly to make that happen.


