Comment spam and nofollow

AOL Journals hasn't been hit by comment spam yet as far as I know, butI'm sure it's just a matter of time.  We're somewhat protectedbecause we don't allow anonymous comments, but commentspammers can get around that once they put some effort into it.
So AOL Journals plans to support the initiative to make at least one form ofcomment spam ineffective -- the rel="nofollow" attribute. The idea is that this would be honored by search engines such asGoogle, and would mean that these links wouldn't count towardsincreasing the page rank of the target.  So, this form of spamwould be rendered useless immediately.  Of course, other formswould still persist, but I say it's better to light a candle than cursethe darkness.   Or at least do both in parallel.