[CarlitoBrigante]

In our case it is tied to the post link, so each post has its own comments, and a couple other changes for styling. We also had a problem with quick reply not working on some browsers with it enabled, but that was fixed by changing the placement of the Facebook comment widget.

We are working on a plugin that will have comments inserted into the post timeline, but I do not plan on releasing/selling it other than to the specific client, as it will have features specific to their community.

I think this is a kind of thing that would be useful only to very specific communities; normal forums without strong commercial ties with Facebook are probably better off using Facebook as little as possible (leaving aside the Facebook app vBulletin offers, which some people might enjoy).