Disqus_Import.xml

<?xml version="1.0"?>
<output>
  <blogpost>
    <url>http://cre8ivethought.com/blog/2010/08/22/importing-comments-into-disqus/</url>
    <title>Title of the post</title>
    <guid>{the guid that Disqus has for the post, often it is just the url}</guid>
    <comments>
      <comment>
        <isAnon>1</isAnon>
        <score>1</score>
        <name>Mark Nijhof</name>
        <email>[email protected]</email>
        <url>http://cre8ivethought.com/blog/index</url>
        <ip>127.0.0.1</ip>
        <date>2010-08-22 14:35:00</date>
        <gmt>2010-08-22 14:35:00</gmt>
        <comment>This is the actual comment body

Actual newlines are preserved, so if you have html formatting in the comments then you should try to convert that to plain text formatting.

You can just append as many comments in the <comments> node and as many blog posts in the <output> node.
        </comment>
      </comment>
    </comments>
  </blogpost>
</output>