I've tried in my syte (<!-- m --><a class="postlink" href="
www.giocosudoku.com">
www.giocosudoku.com) and in your JFBInvite demo too and the information bar show saying that Internet Explorer updated the page to prevent potential script attack... All what is rendered is an #, even if you run the page in compatibility mode.
Really strange, because the picture and the logged user (from JFBConnect) display perfectly...
Any ideas?