How to block spambots, ban spybots, and tell unwanted robots to go to hell

I fight back against telemarketers who abuse my phone, and now I’m fighting back against robots who abuse my web site. (1871 words, 97 comments) [dive into mark]

This is a great article about slowing down spam by stopping selected spambots, spybots, and unwanted robots. I am surprised I missed it when it was published in February.