>> for blocking mail. We use spamcop as part of a scoring system
>for spam
>> that determine delivery but never rely on a single system (esp
>one we
>> don't control) for blocking mail. I'm amazed that anyone does.
>
>"I encourage my competitors to design their network that way" --
>Randy Bush
>
>Quite possibly one of the 10 most insightful networking aphorisms
>I've come across in a quarter century in this industry...

Quite so.

Another feature to encourage in competitors is
that they allow/encourage ordinary users to
determine domain-wide spam-blocks during
everyday mail processing.

Allowing AOL users to decide what e-mail
OTHER AOL users will receive, for instance,
by offering a simple button to push that says,
in effect, "I don't want anyone else to see
messages from this source."