- RSS applications should be capable of constituting elements of a blogosphere, a microblogosphere, artcasting, textcasting, product review systems (e.g. Yelp, TripAdvisor, etc.), and more. RSS items should permit annotation with the application-specific metadata these applications require in a standard way. Advanced RSS clients or third-party aggregators could index these items to provide application-appropriate search and discovery. Although third-party aggregators constitute a potential locus of enclosure and centralization, author-owned content items with standard annotations mean no platform can exclusively index and serve the content.
- Dynamic applications should be able to generate and modify feeds and respond on behalf of multiple HTTP virtual hosts. Each feed should generates links consistent with the owning host, rather than the hostname of the service. A clients modifying state identifies itself with a DNS hostname. If the client’s identity is hosted by the application, the application should generate feeds reflecting in links the client’s ownership. If the client’s identity is hosted elsewhere, applications should update its own state, but update the owning identity’s hosting service, if one is provided. In this way, items like blog comments can be kept in sync across multiple relevant services.