Facebook launched a new social widget “Comments Box” for Facebook Connect. The widget let website, blog or photo gallery to add social comments to their page with few lines of code. With the Comments Box, Facebook users on your site can comment on your content, post those comments to their profiles, and share them with their friends on Facebook. The Comments Box allows non-Facebook users to make comments on your site as well. And via APIs, you can access related comments made on Facebook as well to bring the conversation together.

More info: Installation Instructions