On Wed, 03 Mar 2004, Dave Crocker wrote:
What makes this such an "interesting" problem is the critical need for
spontaneous (unsolicited and uncoordinated) communication is many
human activities. Eliminating the ability to have new people show up
without an "appointment" will cripple some activities.
It ought to be possible to consent to contact without an appointment.
For example, you could have a protocol that allows you to encode rules
like "I consent to receiving messages from new people, provided that the
messages purport to be related to certain specified topics, and provided
that one of a set of specified escrow agents vouches for the existence
of a bond of a specified value to be paid if the message is not what it
purports to be".
--apb (Alan Barrett)