[Taler] e-postage redux

[hellekin]

I remember a conversation where using GNU Taler as an anti-spam shield
in the line of pay-to-whitelist.  At the time it seemed obvious:
increase the price of sending email, and spam will stop.

But then I was recently pointed at http://www.taugh.com/epostage.pdf
which is a decade-ago argument against all forms of e-postage.

Some of the arguments could be technically avoided, but there's at least
one point that seriously made me doubt: how to handle Trojan horses,
that abuse the current user to send email using their (probably
white-listed) address.  A GNU Taler protection would certainly fail in
this case, unless you can convince me that this paper is outdated, and
you found a magic trick.

==
hk