Melt In The Sun wrote:
Aren't you supposed to keep that kind of stuff a secret?

It's no secret that someone's a Freemason.
Masonry is not so much a secret society but more of a "society with secrets." The private aspects are the modes of recognition (like a handshake) and parts of the meeting ritual. Central tenets of the organization are charitable work, moral uprightness, and fraternal friendship.