Here’s a story that ran on NPR last week. Pretty fascinating.
Nell Greenfieldboyce | All Things Considered
August 14, 2008
People who use the Internet to talk to friends, set up free e-mail accounts or buy concert tickets are often unknowingly helping to digitize vast libraries of old books and newspapers
That’s because more than 40,000 Web sites—including popular ones such as Ticketmaster, Facebook and Craigslist—are using a new kind of security program called reCAPTCHA.
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