Reading MarMohan's comments, maybe the option of Public or Private could be limited to User Diaries? It may actually NOT make sense to have a topic be "Private" in something called "Open Forums". I really didn't think about that until this person commented.
However, I don't think it's against the laws of physics or whatever for someone to have a Private Diary here, no black holes will form, nor will the universe implode on itself. If that diary's content included wishing women were more prevalent on the game, than so be it. The owner of that diary would have the option to make it public or private, and if private, have discretion on who else is allowed to post in it.
I will change the poll to reflect this, if anyone wishes to change their vote.