I saw an example online about using the sharer.php page, with which facebook also allows me to track who uses this via the APPID in the facebook developer app section.
Here is my example.
$(document).on('click', '.fb', function(e) { window.open.href = 'http://www.facebook.com/sharer.php?s=100&p[title]=' + encodeURIComponent('this is a title') + '&p[summary]=' + encodeURIComponent('description here') + '&p[url]=' + encodeURIComponent('http://www.nufc.com') + '&p[images][0]=' + encodeURIComponent('http://www.somedomain.com/image.jpg') });
source share