If you want to build an RSS feed for your website, and you’re not sure what is the exact syntax you can use these resources:
- Start with Building and Using an RSS Feed by Denis Sureau, to have the basic format.
- Browse through Really Simple Syndication Best Practices Profile by the RSS Advisory Board.
- Validate your feed with the W3C Feed Validation Service.
- Decide weather your want to also support the Atom format. If so, you can read the specification at The Atom Syndication Format (rfc 4287).
Good luck (: