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Manually indexing 5 million child porn images a year is hard work, says the National Center for Missing and Exploited Children. So Google has stepped in to customize image-search software originally developed for YouTube to the task. The Wall Street Journal has disputed NCMEC's stats on the huge badness of the so-called child porn industry, and Salon.com pulled Debbie Nathan's article defending the public's right to know how much child porn is really online. With Google coming in to assist, accurate data may even emerge. Not that anyone there will be using their 20 percent time to look at the results.