CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart".
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The domain name www.youtube.com was registered on February 14, 2005.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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Mathway.com solves all kinds of math homework problems with step by step explanations.
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