While much of it comes off as alarmist speculation, one hard-to-prove fact has slowly gained a patina of credibility: that terrorists are hiding coded messages in the image files on eBay and other sites that allow public posting. These images would appear normal to most eBay shoppers, but they are actually brimming with guile. A terrorist who knew their true purpose could download the files, decode them with his secret password and perhaps find out where to strike next. Full Story