reCAPTCHA is a free CAPTCHA service that helps protect your site against spam, malicious registrations and other forms of attacks where computers try to disguise themselves as a human. reCAPTCHA comes in the form of a widget that you can easily add to your blog, forum, registration.
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file.CAPTCHA_SITEKEY=03d8NB6n7&LhAd!pH%p9m3
CAPTCHA_SECRET=94gHu5w3z254&*y#uPT*5v