The other benefit is that users can send to the list without the (possibly huge) administrative burden of getting a full and complete list of public keys for al

The other benefit is that users can send to the list without the (possibly huge) administrative burden of getting a full and complete list of public keys for all subscribers. A similar setup is used for e.g. the (linux-)distros lists[0] at openwall for discussing embargoed security issues. 0: http://oss-security.openwall.org/wiki/mailing-lists/distros http://oss-security.openwall.org/wiki/mailing-lists/distros