You can now embed one or more Facebook posts directly into your Forum post/thread.

This is what the code looks like:

HTML Code:
To get the parameter, just grab the embed code next to the post on will look like this:

HTML Code:
<iframe src="" width="500" height="453" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true"></iframe>
You want EVERYTHING in the src="" parameter

There is also a Facebook icon on the advanced post editor to help get you started.