word verification

I had to turn on word verification (an option in your blogger settings) for real people to be able to post comments rather than these automatic comment spammers. Yes I know my blog is public and it's a public space for anyone to post, but dang, could these people get out of my face with the advertising and suspicious links to sketchy websites. I've only gotten one or two of these so far, but I'd rather it take precautions now rather than later.