I upgraded the back end on this to Movable Type 3.x, and added some stricter anti-spam-comment features. They do not completely work as they should yet - in theory, when I approve a comment, it should authorize the person who made the comment to post immediately in the furture, but so far that isn't happening.
Dan, if you see this, I may need to talk to you about a couple things - I'm not getting the email-forwards of the comments and that might be becasue the site's domain is at tabletmagazine.com.
Anyway, let's hope this cuts down on the spam!
Happy New Year!