for kaitlin (and others):

Blogger has word verification on comments, so that spambots don't lay waste to one's comment box in hopes of peddling pills or other less... savory things.

the blogger article on it is here: Blogger Help, and even if it hasn't started being a problem, (I'm looking at you, Aleks), I recommend turning it on. Plus, it's sort of fun to see what random words you'll have to put in before you can leave a message.