What is unique about reCAPTCHA, and I suppose why Google were interested, is that it provides you with security as you help "proof-read" OCRed (optical character recognition) books. Very clever!
Google has acquired
reCAPTCHA,
an open source technology that provides CAPTCHAs to prevent spam and fraud. Captchas are those security questions you find on Web sites that require you to decipher and type words or numbers and detects whether the user is a human.
Mbugua Njihia - CEO
SYMBIOTIC MEDIA CONSORTIUM | Design:Develop:Deploy
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