You don't want them knowing who you're talking to. You don't want your face and voice associated with your message. You're worried what will happen if you're seen in someones company. You wish to remain anonymous.

Leave a message for where and when you wish to see me. Come fully clothed with your face concealed. Hand me instructions and a letter and fifty gold. I will memorize your letter and destroy it, deliver your message to the recipient, and contact you with their reply.

After all, it's really no ones business but your own.

Ivor Marsk Last Stand