Last week, Facebook released it's new Comment Box social widget which allows a developer to add threaded comment functionality to any site they want. It literally took me less than 5 minutes to slap it all together; and maybe if I didn't read stop to read all the itty bitty details, it probably would of taken me half that time. I must say, I'm pretty impressed -- it integrates well with my own site, and it looks slick. Facebook's widget allows allows for anonymous comments, so you don't necessarily need to be facebook user in order to submit your 2 cents.

So wow, I'm pretty excited, if that isn't pretty obvious. Also included in the widget is a fully functional administration tool to remove comments, blacklist users and all sorts of fun stuff. The developer can also limit the posts per page and further customizations via the XFBML spec.

Check it out, just scroll to the bottom to see their comment interface. Leave a comment if you wish too.

How To: Create a Comments Box with Facebook Connect in 5 Minutes from Pete Bratach on Vimeo.

EDIT (1/14/2010): Here's the link to the Comment's box wiki for more advance settings and parameters. One issue I ran into was getting the box to render, but thats only because facebook requires a valid callback URL.