This is a Facebook thing. I actually wrote a plugin in 2012 that faciliated exactly what you are talking about but you would not believe the hate mail I got about it. Seriously, really mad people because I allowed Indexhibit to embrace social media. I should write a book about this...I wonder if I saved any of those emails.
Anyways, I think the plugin around here somewhere and it would probably take me 10 mins to clean up. But, I have a computer emergency and I have to travel to the US very early in the morning. Send me an email at support [at] indexhibit [dot] org...wait...I see I have one here already. Send me another email if I don't get back to you by next Monday (I should, but give me a little time).
Cheers