No instructions included for getting the application id from Facebook. Without that key piece of information, this plugin appears to be useless. I'm not a programmer, but I am far from being computer illiterate. I don't have the time to spend a week deciphering Facebook's developer interface. So any plugin whose first instruction is "Get your app id from Facebook" without saying how to do that is useless to me. I just want a plugin that will put my new posts on my Facebook fan page and maybe give my readers a like button. It seems like it would be easier to do this manually than to use this app. And Facebook's app was even worse!
I set this functionality up for my Twitter account using WP to Twitter, and it worked great. The plugin creator included easy, step-by-step instructions for getting the ids and keys from Twitter, and it was up and working in minutes.