Jcomments integration allows users to comment DJ-Classifieds items with the JComments extension (free).

There's no additional plugin needed for Jcomments to work with DJ-Classifieds, the solution is embedded in the component.

To enable Jcomments comments in DJ-Classifieds:

In your Joomla backend go to Components -> DJ-Classifieds -> Options -> "views" tab

Scroll down to "Advert view" section and change the "Comments" parameter to "JComments"

That's all, users can now comment under the adverts with JComments.

You will learn more about how to use the JComments from the developer's page.