omega/Facebook-Graph — pull request #1 by freyfogle (2012-09-30 14:41:05+00:00)
Title: Set the optional 'state' command

enable the user to set the optional 'state' param which Facebook allows as a way to ensure the postback is not a CSRF attack. See Facebook's relevant docs at
http://developers.facebook.com/docs/authentication/server-side/