Looks like Microsoft will be considering Atom an “RSS format” in Windows Vista.

From the Windows Vista Developer Center RSS homepage:

Windows Vista will support all common RSS formats, including: RSS 1.0, 2.0 and Atom 0.3. We will support Atom 1.0 when it’s released.

And from the RSS Support in Longhorn article:

RSS, as we use it in this document, refers not to a single format (such as RSS 2.0), but to the general concept of feeds of syndicated content. It should be considered to cover all feed formats that meet the basic criteria of updateable [sic] collections of items.

I do see why Microsoft has chosen to define RSS this way, and at the same time I don’t.

There really isn’t a term that exclusively encapsulates both “RSS” and “Atom.” You could say the word “feed,” though that can include other formats such as OPML.

But don’t you think “feed” is more technically accurate and user-friendly than “RSS” when describing both RSS and Atom?