I just did some massive research on FB and their crazy approval methods, and not to much avail either. Some of my friends have just taken the shotgun approach and thrown as much as they can in variations of Ads and then usually one or more get accepted. A heads up though is the sometimes auto deny it is the same syntax (simply going in and editing a landing page or squeeze yet keeping the name the same can affect). Its basically all over the place, largely in part because FB got rid of most if not all of their affiliate department, including ad approvals, etc.
TPB ftw!