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reCAPTCHA: Stop Spam, Read Books

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Over 60 million CAPTCHAs are solved every day by people around the world. reCAPTCHA channels this human effort into helping to digitize books from the Internet Archive . When you solve a reCAPTCHA, you help preserve literature by deciphering a word t...

Language: English Backlinks: 6,904 Alexa: 94,257 Most Popular In: India (40,615) Web Safety: 95% Page Rank: 7 Last Checked: 7/19/2013
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