davidgueringer on "[Plugin: Jetpack by WordPress.com] Jetpack only displays header image when posting to Facebook"

I use Jetpack to update my Facebook page and Twitter feed whenever I publish a new post. Since it auto-posts, I'm not given the option to choose which thumbnail is used.

My problem is that only my header image/banner is displayed on these posts, instead of the actual image used in the post. This happens even when I set a Featured Image.

Here's my most recent post:
http://davidgueringer.com/blog/2013/07/08/for-fans-of-the-game/

Here's mt FB page, posted today July 8, 2013:
https://www.facebook.com/DavidGueringerPhotography?ref=ts&fref=ts

Thoughts?

http://wordpress.org/extend/plugins/jetpack/