Joe Gregorio: "The current revision of the AtomAPI is contains quite a few changes from previous revisions. All of those changes have been talked about seperately, but when put together represent a fairly large change to the API. Here is Quick Reference
This document describes TypePad's implementation of the Atom API. This documentation and TypePad's Atom implementation are preliminary and may change until version 1.0 of both the Atom specification and of this document.