This plugin adds a new widget which can show statistics for your blog’s/forum’s 
Disqus comments: most popular discussions, top commenters, recent comments.
Configurable are: 
 * Color Theme 
 * Number of items to show 
 * Default tab view (most popular discussions, top commenters, recent comments) 
 * Whether to show the standard WordPress widget title bar 
 * Title of the widget in the title bar

Disqus Widget

Allows the user to display statistics for their blog's/forum's Disqus comments.

Automattic

Glenn Ansley

This plugin will import comments from a Disqus export file.
Due to a limitation with the current version of the Disqus Comments plugin the import does not retain nested commenting. Once this support is available in the XML, we will provide support.
Please provide feedback and bug reports in the <a href="https://wordpress.org/tags/disqus-comments-importer?forum_id=10#postform" rel="ugc">Forums</a>

Disqus Comments Importer

Import comments from a Disqus export file.

Disqus Widget vs Disqus Comments Importer