PragmaTouch products mTouch and mTouch+ (native iOS app for Moodle) has an increasing popularity and we get lots of spam emails through our "Contact Us" page. As a result using some sort of CAPTCHA was inevitable although I think CAPTCHA's are not user friendly.
After evaluating some CAPTCHA implementations I decided to integrate reCAPTCHA to our Cuyahoga powered site. Here are the details
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