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More than 200 employees at Google have spent the past three months working on preventing child sexual abuse content from appearing in the firm's search results. Photo by Ferre' Dollar/CNN.

More than 200 employees at Google have spent the past three months working on preventing child sexual abuse content from appearing in the firm's search results. Photo by Ferre' Dollar/CNN.

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Google, Microsoft Move to Block Child Porn

Google and Microsoft are teaming up to try to rid the internet of child pornography.