On Tue, 1 May 2001, Brandon wrote: > > > > But then it wouldn't stop mechanical spam. > > > > True. It has to be combined with the credit scheme or a time based scheme > > to allow the recipient to renew or cancel a sequence. > > The two best ways, I think, are to either have a whitelist (moderated > subscription) or think cash on every post. Everything else is just adding > complicated for no clear big win. >
Does a whitelist filter a single stack for signed messages? The SecureCard thing is the same as having a Think Cash that publishes a
