Por suerte, siempre me queda Mark Pilgrim. Acabo de encontrar un artículo suyo llamado precisamente What is RSS? que sirve para hacerse una idea. Especialmente, esta tabla:
| Version | Owner | Pros | Status | Recommendation |
|---|---|---|---|---|
| 0.90 | Netscape | Obsoleted by 1.0 | Don’t use | |
| 0.91 | UserLand | Drop dead simple | Officially obsoleted by 2.0, but still quite popular | Use for basic syndication. Easy migration path to 2.0 if you need more flexibility |
| 0.92, 0.93, 0.94 | UserLand | Allows richer metadata than 0.91 | Obsoleted by 2.0 | Use 2.0 instead |
| 1.0 | RSS-DEV Working Group | RDF-based, extensibility via modules, not controlled by a single vendor | Stable core, active module development | Use for RDF-based applications or if you need advanced RDF-specific modules |
| 2.0 | UserLand | Extensibility via modules, easy migration path from 0.9x branch | Stable core, active module development | Use for general-purpose, metadata-rich syndication |
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