I've been getting some "Comment Spam" lately that has become, quite frankly, a major PITA to deal with. Why do these idiots think that this will actually bring business to them? At any rate, because of the increasing amount of spam, I've enabled word verification on my blog. If you post a comment, you'll be asked to verify a graphical representation of random characters in order to post.
My apologies for any inconvenience, but it beats having to wade through 10 junk comments to every single post.