This isn't competing with Disqus at all. Disqus totally replaces blog commenting with a fairly trivial integration, and even syncs the comments back to your dat

This isn't competing with Disqus at all. Disqus totally replaces blog commenting with a fairly trivial integration, and even syncs the comments back to your database where you can retain ownership. What is a blogger going to do, put this Facebook widget at the bottom of every post?