Re: spam flood?

At 5:27p -0400 on Fri, 30 May 2008, Andrew Sullivan wrote:
> Is there anything we can do to mitigate the current spam flood to the
> lists? 
> 
> If not, I'm going to have to route moderation requests this weekend to
> /dev/null.  There is no way I can keep up with this firehose over the
> weekend.

Perhaps a silly question from a lurker, but aren't the lists 
post-only-if-subscriber?  Why does the spam problem keep coming up?

Kevin