There is a reason for that.
I moderate at
CountingDown.com, and sometimes, people there look at the mods as police men, or censors, however, we are listed at the tops of the forums. We sometimes take flak when we have to take action. We handle things like a Jedi Knight does, so that both parties get what is deserved.
The reason for secrecy is such that the moderators here are not singled out, and do not get a “big head” about it, which sometimes happens when one is put in a position of visible power. Sometimes action needs to happen and a moderator is needed, and they will work behind the scenes with someone if need be, so that people are not embarrassed by something, etc.
I hope this helps.