I do not like green eggs and spam

So there was some talk on Twitter yesterday about how to protect your blog from spam comments.

I hate spam. I hate it with a passion to rival very little else. Once, I even wrote a poem to express my feelings about spam in the manner of a Dr. Seuss. No, really. My creative writing professor called it "inspired."

When I set up the Dirty Birdies blog, I even set it up so only people with real accounts could comment, because if I started getting flooded with spam comments in my inbox (because...