I think the Blue Book is public enough. I voted private, I'm not sure folks realize how much info is available in the public domain once you have a real name and a fair idea of the residential location. I do seem to be in the minority in the voting, so maybe I don't fully understand the question or if there is an opt out feature in each member's profile for what you are considering. Then again if you are only talking about first names like Bill, or Joshua, or in my case Martin...then change my vote to public.
OK, I just removed my last name from the real name field. Go for it.