" For most of human history, the proliferation of the individual likeness was the sole prerogative of the illustrious, whether it was he face of the emperor on a Roman coin or the face of Garbo on the silver screen. The commercialization of photography may have broadened access to portraiture somewhat, but apart from wanted posters, the image of most common people would never be widely propagated. "

― Tim Wu , The Attention Merchants: The Epic Scramble to Get Inside Our Heads