Atom vs RSS

I just learned the atom xml format which may replace RSS in future.
Google adapts ATOM and some companies use RSS or both.

Below is the header to update blogger from command line.

<entry xmlns="http://www.w3.org/2005/Atom">
  <app:control xmlns:app="http://www.w3.org/2007/app">
    <app:draft>yes</app:draft>
  </app:control>
  <title type="text">'$title'</title>
  <content type="xhtml">
    <div xmlns="http://www.w3.org/1999/xhtml">

Please refer to Ben Lynn's blog