> Is it really bifurcated for the end user though? Yes. Suppose you are build feeds search engine. User enters query that matches some blog. This blog exposes

> Is it really bifurcated for the end user though? Yes. Suppose you are build feeds search engine. User enters query that matches some blog. This blog exposes both RSS and ATOM feeds (very common scenario). Which one should your engine show in the results? If it shows both, which one the user should select for reading? And what if they differ, but only slightly? Why should the user be exposed to that?