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TwitC posted this on 07/28/2011
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What is CAPTCHA Used For
Posted by TwitC on 07/28/2011
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http://chris.pirillo.com/what-is-captcha/ Aside from being annoying, does CAPTCHA really serve a useful purpose? When you fill out a CAPTCHA, you're essentially telling the website that you're a human being capable of reading (or in some cases hearing) the distorted word, phrase, or random characters. This is one method site administrators use to keep spammers from flooding the site with unwanted content.
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