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The GAO used two techniques to identify pornography: evaluating file names and viewing the actual image files. "We used 12 keywords known to be associated with child pornography on the Internet to search for child pornography image files," wrote Linda Koontz, director of information management issues for the GAO. "We identified 1,286 items, each with a title and file name, determining that 543 (about 42 percent) were associated with child pornography images. Of the remaining, 34 percent were classified as adult pornography and 24 percent as non-pornographic."