Because of the growing number of spam comments posted on this blog, I am turning off comments. I apologize for the inconvenience.
It is amazing the ends that people will go to in an attempt to increase their search engine rankings. I am reasonably certain most of the spam comments I was seeing originated from web-based robots. I am impressed by the skill involved in programming a software robot that can crawl blogs to submit comments by defeating captchas.
A captcha is the annoying distorted text you have to type in on some web sites. It is basically a Turing test, or a way of distinguishing between a human and a robot in a blind interaction. It's impressive that computers are defeating these basic Turing tests. We are truly experiencing change at an unprecedented rate.
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