Comment Spam

In the last two days the blog has been hit by automated commentspam. Since deleting them by hand is tedious, especially since I more or less feel obligated to correct the problem at the moment I find out about it, I've been looking for dealing with it.

I found (don't know where I saw it, but whoever pointed me towards it Thanks!) this description of making comment spam disappear from sight, by Jay Allen.

I followed instructions but can't get it to work properly. I get syntax errors with the code Jay provides. So for now: automated spam will still show up.
But then again it will only provide a test case to see if the hack works.