Blog milestone: first spam comment

Here; clearly People and Resources is exploding in popularity.

I think I already have word verification turned on - are there other ways to avoid spam comments like this?

Update: I lied - there was one spam comment before this one. I even blogged it as a major milestone at the time. Forgetting about one's older posts is a dubious sign of the longevity of one's blog, but I'll take it.