See: http://toolbar.netcraft.com/site_report?url=xx-fbcdn-shv-01-ams3.fbcdn.net
and Host name: -edge-star-shv-01-sea1.facebook.com
RC4
Your server’s encryption settings are vulnerable. This server uses the RC4 cipher algorithm which is not secure.
Why facebook, fbcdn.net or markmonitor continued to use the insecure RC4 cipher algorithm? :o
That is not setting the right example!
polonus (volunteer website security analyst and website error-hunter)