One day, after I logged in to my e-mail account, I discovered that new mail was waiting for me in my mail box

. The lengthy message was prefaced by the heading:

"From: Maildemon@: Your message could not be sent ..etc" " Reason: Address unknown..."

Upon scanning this returned letter, I discovered that it had not been written by me at all, and that the intended recipient and sender were thousands of miles away, apparently the unfortunate victims of a random mailer screw-up. The first sentence of that letter, though, I will always remember:

"My dearest Janice:"

"At last, we have a method of non-verbal communication which is completely private... "