I haven't yet read enough on digital money to know the intricacies, but here's a possible use (note that a variant of this is possible *now*, due to the extremely insecure way that credit card charges are handled): If a good way of implementing digital cash were found (maybe it has been?), it would be possible to operate a truly anonymous *commercial* remailer. You send the remailer a message, encrypted by its public key, containing the message you want re-sent, the destination, and *payment for the service*. For hit&run anonymity the remailer doesn't even need to ever know who you are... The main advantage of this is that it would allow someone to run a remailer without having to fund it out of the goodness of their heart... It's a valuable service, and I'm sure there's a market... Also, it would provide a *real* use for digital cash, thus starting the ball rolling on that... Comments? -David