I'm sure Mr. Obvious meant to say the following publically. Frankly, I give up. Go read Brands and Chaum, though I bet you'd dispute them, as well, on what I just said. Yes, I do believe that, given small enough bearer cash transactions, authentication of things like the "adult" bit will be sold, and for cash. Finally, a payment system is, by definition, morality-neutral, or at least orthogonal. Biblical imprecations of money being the root of all evil aside... Cheers, RAH --- begin forwarded text