I'm developing a Facebook App from a website I've created and I'm required to setup a Callback URL. I have two books on the subject and both don't give me enough detail on what a Callback URL is and how to actually set one up on my server. I understand it has to be a folder on my server but thats it. The help files online don't provide that much information either. Any help would be greatly appreciated, if someone can help me write the code... even better. Thanks