Currently the tag rss is in use.
- Technically "RSS" is not distinct, because there are several different formats that use this name (they are not merely different versions of the same format!).
- There is also the Atom format.
Many users use "RSS" as synonym for "feed", and most of the time (maybe even without knowing it) they also want to create/consume "Atom" feeds.
- Use the tag "feed" (feed) or "Web feed" (web-feed) instead. (Reference: http://en.wikipedia.org/wiki/Web_feed)
- Add rss (and possibly atom) as synonym (or just delete rss)
If someone requires only a specific feed format, the tag can still be added, and the question lists exactly which format is required.