[hashcash] Re: PR Problem?

Todd A. Jacobs wrote:

On Sun, Nov 12, 2006 at 02:09:31PM -0800, Todd A. Jacobs wrote:


twice if they have sender-pays on the server side. Just my $0.02, but
minting stamps really belongs in the MUA *unless* you have a dedicated
MTA for things like mailing lists or legitimate e-commerce.


Just a follow-up thought here: having mailing list software that could
mint stamps (e.g. mailman) might generate some uptake, too. Probably not
on high-volume lists, but lower-volume lists would probably be willing
to implement it if it might reduce bounces from spam filters somewhere
down the line.
I was talking about this with a friend the other day and he said that I had already solved the problem (funny, I haven't seen it).
He runs a mailing list behind my twopenny blue filter. It turns out that the friends list predicate is a surprisingly effective filter for mailing lists. New users get stamps for the first message (or two) then they are white listed and they never get stamps from that point on.
One would think that the friends list would be redundant in the light of the mailing list "subscriber only" feature. Both are important but both have different behavioral characteristics. I'm not sure how it happens but I strip out of the vast majority of the messages and I cannot remember the last time a piece of spam got stuck in the mailing list trap.
So in reality, you don't need stamps and if you generate them with the right predicate, mailing lists operate unimpeded. 

That's my experience.

---eric

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