Member Rara Avis
The MC forums are "private" forums, in that that one has to be specifically admitted. It may not seem like it, because the requirements are obviously very different, but MC is just as secure as our private Moderator's forums, and needs to be so because it uses the same security mechanisms.
The Topic Review feature, on the other hand, is NOT secure. It doesn't take the time necessary to check who you are, and therefore would represent a huge backdoor if it were allowed in our private forums.