Disqus provides all blogs with the possibility to replace the original comment system via a plugin or code. After completion, every new article forms a new thread in your own forum (username.disqus.com). Whether a user leaves a comment on your blog or on this "post" in your disqus forum, updates will be reflected in both places. Within the forum, users can also start new topics and create new posts.
Rating System: By installing the plugin, all comments and processing are handled by Disqus. There is a rating system for each registered user's comment. We can see that there is a pair of up and down arrows before each comment avatar. Clicking up adds one point to the comment, while clicking down deducts a point. Registered users can see their current score in their disqus profile.
Reply System: You can reply to a specific comment, and replies are displayed in a tree structure. Registered users can also see the number of times they have been replied to and the specific replies in their profile.