: Why are guests appearing even with the viewing level set to Members Only?

There are some situations where a guest will be counted even though you may have your message board viewing level set to "Members Only" or "Approved Members Only". For example, if a member logs out of your message board the logout page records them as a guest.

Even though the user may be prompted with a login page or a password page, they are still counted as viewing your message board since it is part of your message board.

Therefore it is still safe if you see a guest on your "Online" list now and then.