XML - eXtensible Markup Language - a structured way to present information.

<forum uri="http://fud.prohost.org/forum/index.php">

  <item id="10084">
    <title>Binary Protocols vs XML</title>
    <link>http://fud.prohost.org/forum/index.php/m/10084</link>
    <description>Why does everyone insist on using XML?</description>
  </item>

  <item id="10149">
    <title>How do I post messages?</title>
    <link>http://fud.prohost.org/forum/index.php/m/10149</link>
    <description>I can post messages, help!</description>
  </item>

</forum>