IT MIGHT NOT SEEM that Internet porn bears any similarity to houses for sale in Orange County, or that American-made shoes have anything in common with the top-grossing movies in history. But these and other categories are equally rich fodder for Jason Salavon's analysis. He constructs computer software that reformats data—whatever their origin or kind—into intriguing patterns. Sometimes he superimposes scores of related images, digitally layering them so that ultimately only the amorphous average remains. In other instances he creates complex and multidimensional charts, giving data