Disqus - A new comment system for blogger

Disqus is an enhanced, free comment system for blogger that allows the user to track comments and replies, and categorize them. Leaving a comment can be as involving as writing a blog post.Every time a user posts a comment, a new thread is started in his own forum, and replies posted in that thread are linked to the original. Every commenter has a profile that is used on all blogs enabled with Disqus. More details....Disqus has full integrated support for WordPress, MovableType, Tumblr, Blogger, and TypePad. If you do not use any of these, Disqus also provides a general code snippet for any website. While Disqus was designed with blogs in mind, any newspaper, website, or web application would also likely work. [source]