Hands off.
I was going to write a decent entry to say this but the scum don't deserve that much more of my time. Even with an anti-spam plug-in, comment spam has become such a daily hassle that I'm just turning off comments on my older entries.
It shouldn't impact the people who already know of this site but until I take the time to implement stronger measures, I will get no more comments on older posts from new visitors. I hope you spammers get a karmic boomerang in the pants for intentionally soiling something that doesn't belong to you.
-Dan