I sent a greeting card from a small commercial Flash card-maker to a number of people. The service automatically notified me when each card arrived on the recipient's desktop. How did it do this? Does that mean that when the email is opened, that it somehow dispatches a notice back to the original sender? If so, then surely spammers use this to certify when they have reached a live sucker? And if they can do that, surely it's possible to trace that subtle little dispatched notice, which MUST go to a real address? And thus find and cut off at the kneecaps the spammer? I ask. -don hinkle -ObiDon quotes: "If you believe that feeling bad or worrying long enough will change a past or future event, then you are residing on another planet with a different reality system." (William James)