Hi I'm having this same issue - when I use wordpress publicize, it posts to my facebook page as only a link with the /?fb_source=pubv1 link at the end. Sometimes it works perfectly, though, showing a thumbnail and excerpt. But 80-90% of the time, it's just this link with nothing else (which also screws up the "like" button). I see there is a code above that I can enter into my editor that should maybe fix it? Where do I paste that - index.php ? custom.css ?
(or should I just change the format of permalinks?)