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I've never understood the hatred for Captcha, and I'm a person who does have visual problems. I spend many hours a day on the web, yet I come across Captcha and reCaptcha rarely, usually when making a purchase or posting to a blog.
I like the fact that reCaptcha serves a dual purpose. If I can't make out the first offering I just reload it and take a stab at the second one. It takes what, a few seconds all told? It's a small tool that does its job well. I've always looked at it as a puzzle rather than as an obstacle to be overcome, so perhaps that different mental outlook makes the difference.
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