Hi,
The sharing with Facebook doesn't work with the image because is missing tag og.image
the my page
<meta property="og:type" content="website"/>
<meta property="og:url" content="http://www.visitcapalbio.com/index.php?option=com_community&view=groups&task=viewbulletin&groupid=211&bulletinid=6428&Itemid=188"/>
<meta property="og:title" content="Tavola rotonda “L’arte di Piero Raspi” a cura dell’Associazione Culturale Sinergie Culturali"/>
<meta property="og:description" content="è il giornale per divertirsi a Roma. Cinema, Musica, Teatro, Mostre, Spettacoli, vivi Roma! Gli eventi riuniti in una comoda agenda da sfogliare con le recensioni, adesso Vivi Roma è anche un social in cui condividere le emozioni delle serate insieme ai tuoi amici!"/>
<meta property="og:see_also" content="http://www.visitcapalbio.com/index.php?option=com_community&view=frontpage&Itemid=125"/>
<meta property="og:see_also" content="http://www.visitcapalbio.com/index.php?option=com_community&view=groups&Itemid=142"/>
<meta property="og:see_also" content="http://www.visitcapalbio.com/index.php?option=com_community&view=photos&Itemid=126"/>
<meta property="og:see_also" content="http://www.visitcapalbio.com/index.php?option=com_community&view=videos&Itemid=127"/>
<meta property="og:see_also" content="http://www.visitcapalbio.com/index.php?option=com_community&view=events&Itemid=128"/>
<meta property="og:site_name" content="visitcapalbio"/>
<style type="text/css">video { width: 100% !important; height: auto !important; }</style>

where I can find the script? Is very important resolve this I have big problem
thank you