Spammers Outsourcing Their Captcha Needs

This story was intended for the "Weekend Reading" column, but I had a software glitch. My thanks to "anonymous" for bringing it to my attention.

The captcha is the junk filter's last resort. Because it's easy and cheap to program machines to post any sort of junk on blogs, a captcha (which puts numbers or letters in an image, which a machine in theory can't read) shows whether you've got a real live person giving their thoughts, or just a dumb machine trying to up some spammer's search-engine ranking.

Read the article HERE.