February 10, 2009, 2:09 am
           Tim says: Obviously, CAPTCHA is an acronym. The question is what does it stand for? The answer is fairly simple, as is CAPTCHAs purpose. A CAPTCHA, or Completely Automated Public Turing-test to tell Computers and Humans Apart, is used to keep bots and other automated programs from signing up for offers, collecting or signing up for email addresses, violating privacy, trying to crack passwords, or sending out spam to unsuspecting email recipients. A CAPTCHA works by issuing a challenge to the person or entity attempting to gain access.