No block available with a module
It should be pretty easy to create a block in your own custom module that displays this info. Take a close look at the fb_post_page function in fb_post.admin.inc and you can see what the module uses to output that data on the user/%uid/edit/fb-post page.

I'm not super familiar but it looks like the info you want to display can be gotten by calling theme('fb_post_connect', array('connection_path' =&gt; fb_post_get_oauth_url($account, $app_id))); and displaying the result in a block (or even directly in a panel pane)