The Facebook commenting system is definitely nice, unfortunately it’s leaving out a lot of people who are not on Facebook. So I’m trying to switch to something more inclusing, and not so embedded in Facebook. If I have things correct, disqus should allow you to use your Facebook login or any number of popular logins, but will keep the comments within the site. We’ll see how this works.
I will keep the Facebook plugin going for a while longer as well, but if Disqus does what I want I will gradually phase it out.