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Use reCAPTCHA on Your Site!
reCAPTCHA helps prevent automated abuse of your site (such as comment spam or bogus registrations) by using a CAPTCHA to ensure that only humans perform certain actions.
It's Free! Yep, reCAPTCHA is free.
It's Useful. Why waste the effort of your users? reCAPTCHA helps to digitize books.
It's Accessible. reCAPTCHA has an audio test that allows blind people to freely navigate your site.
It's Secure. Most other CAPTCHA implementations can be easily broken.
It's Popular. Over 200,000 sites use reCAPTCHA, including household names like Facebook, Ticketmaster, Twitter and Craigslist.
It's Easy. reCAPTCHA is a Web service. As such, adopting it is as simple as adding a few lines of code on your site. For many applications and programming languages such as Wordpress and PHP we also have easy-to-install plugins available. We generate and check the distorted images, so you don't need to run costly image generation programs.
