Spam is always a pain in the neck for blogs. Even though I've only made 14 entries, including this one, my comment count, is almost 700, of which only 6 are genuine. The rest have been spam comments I've deleted.
Anyway, I've got a few spam blockers in place that don't seem to help much; especially since I'm having to moderate a lot of the spam comments myself. Tonight, I've added Googles Recaptcha to the mix, and hopefully that'll help!