Well, for an RSS feed, it's URL pretty much plays the role of the identifier*. An atom:id certainly could be used, but I wouldn't imagine that any sane implementation would make it anything different than the URL of the RSS feed itself.
* quite honestly, I've never really understood why atom:feed requires an atom:id :-) - James Franklin Tse wrote: > [snip] > By the way, do publishers need to use an atom:id element in RSS 2 feeds since > there is no equivalent in RSS 2? > [snip]
