Even if you've never heard of Disqus before, you've almost certainly seen it. With slick social integration, support for a variety of platforms (including WordPress, Blogger, Tumblr, and Drupal) and a rapidly expanding user base, Disqus has become one of the most popular hosting services for website comments.
There are two primary ways to migrate comments from Drupal to Disqus. The API way that automates the whole process by directly connecting to Disqus from Drupal and moves the comments for you. The second way is an XML export tool that Disqus migrate provides to migrate comments from Drupal in XML format which you can import into Disqus manually which is what I will show you how to do.