Personally I don't think there is much to be gained from doing so
since we don't get _that_ much spam on the list, and when we do, I
usually delete and ban those users within a few short hours. There are
now 18 banned (for spam) members on the list, but we've had over 25
new members join since April 2009. If we were to require moderation,
would it not increase the barrier to entry? At some point in time
if/when spam levels rise this may be a requirement, but do we really
need it now?
Tim ^,^