In a message dated 97-06-30 21:45:55 EDT, you write:

<< 
 I think the real problem here is, How do those people who don't want to
 be on the list get on the list in the first place?
  >>
Have you ever been to the mailing list subscription page?

http://www.win.or.jp/~doi/ML/

There you can auto subscribe/unsubscribe to the ML.  I've been subscribed off
this list from someone as a bad joke.  Also, people can auto subscribe other
people there.  So in essence if you want to send them lots of mail, subscribe
them to every mailing list there.  Wouldn't that be mean? ^_^