Social commenting: How can I control better?

Comments on Facebook and your site
There isn't any way to 'merge' the comments from an article on your site and your Facebook Page. Your Facebook Page has a intro text section (your comment), the link to your article, and the preview that's generated by JFBConnect.

If a user responds on your Facebook Page, they could be responding to your comment about the page, and not the page's content itself. A comment box on your site will always be implied to be about the article that is shown.

Facebook doesn't let you merge the two because there is a very different context between the two.

I know that may be a little confusing, but hopefully it makes sense.

Also, if I use a simple tag like {JFBCComments} at the end of one of my articles, where is the comment text persisted? Locally in the database or at FB?

Comments are stored with Facebook itself. They are all associated with the current URL in the address bar, or whatever JFBConnect generates as the best URL for the page, since Joomla can have multiple URLs lead to the same content.

Lastly, only I as SuperUser can post in the FB comment box, how do I let Registered users (I mean people who have logged in with FB) do so?

I'm not sure what you mean here. The Facebook Comments box should show to all users and any user who is logged into Facebook.com should be able to post in it. What happens when you are not logged into Facebook or logged in with a different Facebook account? Does the box not show, is there an error message, etc?

Thanks,
Alex

I'm glad to hear we could help explain things for you. If you need anything else, just let us know.

Finally, if you haven't already, please consider leaving a rating and review for JFBConnect, or our support, on the Joomla Extension Directory. It certainly isn't required, but is very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215

Thanks,
Alex