maybe this article will help.

Ok.

I've tried this about a zillion different ways and nothing works.

Open Graph Properties don't help at all.

The Facebook Share command line: <a href="http://www.facebook.com/sharer.php... [there is more to this] works and it does post to Facebook. It is picking up the thread URL just fine but I cannot specify a specific image or summary on the command line. The image being picked up is a small portion of the vBulletin header graphic and the summary is a repeat of the thread title.

I must not have the syntax right.

Can anyone come up with a command line syntax that works on their site and specifies a specific image and summary?

Thanks.