Please excuse me if this forum is not appropriate for the post and delete it. Twitter launched it's photos API two days ago and using the same I just came up with this new application with which you can post your Facebook photos directly to Twitter. If that sounds useful, you can try it out here - http://apps.facebook.com/twitmypic
It's very interesting, I just posted my fb profile pic to my twitter accounts, shows up my pic by then. Thanks for your sharing.