....only bouncing
everything to 10+ addresses from the same sender. Legitimate senders who
want to send new baby announcements etc to half the world would still be
able to do it by just limiting 'em to batches of 9 at a time. Prob'ly
wouldn't be foolproof, but would get rid of 90% of spam...and have the
added benefit of clogging up the spammers' servers with their own junk
coming back to 'em.

Wouldn't the spammers just send in batches of 9?