> Facebook and Twitter already run photos posted on their sites through a Microsoft-developed system called PhotoDNA in order to flag those who match known chil

> Facebook and Twitter already run photos posted on their sites through a Microsoft-developed system called PhotoDNA in order to flag those who match known child pornography images... "Every time you upload a photograph to Facebook or put one on Twitter for that matter you are now ratting out anybody in that frame to any police agency in the world that’s looking for them," This was news to me. Jezus, everyone on every photo?