Hi Jeremy,
I have JetPack installed and the share icons for Publicize. I also have the WP Bit.ly and your Jetpack for shortlinks sharing plugin installed. I am using a custom bit.ly URL shortner and it's working for Twitter, but not Facebook.
For example - When you click Twitter, it includes the mrjust.in URL (custom bit.ly shortner). This is good! When you click Facebook, it's showing the full URL justinfrechette.com. This is bad!
Is there any way to get Facebook to show the mrjust.in URL when sharing? Thanks for your help!
EDIT: It appears that the custom URL shortner does work with Facebook... FB, apparently, displays the destination URL in the post but links to the shortner.