The plugin only displays friends photos. If the person viewing the plugin does not have friends who have liked your page or have connected to your site, no faces will be shown.
If you are displaying people who have liked your page, and nobody has liked it yet, the plugin will render nothing. If some people have liked your page, but none of the viewing person's friends have liked it, the plugin will display the total number of people who have liked your page.
If you are displaying people who have connected to your site, and none of the viewing person's friends have connected yet, the plugin will render nothing.
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