Facebook has announced an update to its Comments Box plug-in that allows third-party Websites to add Facebook’s comment boards to their own pages via a single line of code. The feature uses “social signals” to more prominently display comments posted by the consumer’s Facebook friends or friends of friends as well as the most popular or active discussion threads. (Facebook says it will hide comments marked as spam.)
Facebook’s default setting will also post discussions started on third-party sites on the commenter's Facebook wall if the consumer is logged onto Facebook. The commenter’s friends will see the post on their news feeds that shows the comment, and the post will include a link to the site where the original consumer posted the comment.
Click HERE for a very detailed explanation of this new feature on the MSNBC website.