title: Enable visitors to share large image from website to their Facebook wall
body: <p>How do I enable visitors on my website to like/share an image on my site and have a large image appear on their wall ... the same size as if they were to like/share a wall photo (300px wide) ... instead of the thumbnail (90px wide).</p>
  
  <p>I can get the thumbnail size to appear using the basic like/share button, but I want the larger wall-size photo to appear.</p>