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Does your site have a CAPTCHA? Chenry isn't a fan of the tool aimed at providing a wall to eliminate spam, but decided to develop a case study to clear his head and analyze how CAPTCHAs can influence Web conversion rates.
The study was conducted across 50 Web sites during six months. Along with graphs and charts, CHenry recorded the successful, the failed and the spam conversions for each of the sites. The findings in this long, detailed post might surprise you.