facebook javascript sdk fb_xd_fragment?

Question

I am using the facebook javascript sdk to embed a like button in my page.

What is fb_xd_fragment? I see it appends to the end of my url like http://www.example.com/c

Answer 1

a1anm's link is good for cleaning up the mess that this causes, but there's a way to prevent it from happening.

Set 'channelUrl' to a locally hosted channel page. See http://threebrothers.org/brendan/blog/facebook-connect-ie-fb_xd_fragment-iframe/ for details.