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birdy1976: #reCAPTCHA (Stop Spam, Read Books) is a #CAPTCHA service by @google that helps to digitize books with #CrowdSourcing http://icio.us/323t5c
birdy1976: #reCAPTCHA (Stop Spam, Read Books) is a #CAPTCHA service by @google that helps to digitize books with #CrowdSourcing http://icio.us/323t5c