For a long time, photo portraits were restricted to a few places: in wallets, on ID cards and passports, in police files and high school yearbooks, on walls and desktops, on tombstones and wanted posters. Now they’re everywhere: on Facebook, Twitter, and Tumblr dashboards, they follow us around in a constantly updating cloud. Photography has become a means of autobiography and a broadcast art. It’s a way of keeping track what we wore last year and telling the world what we did last night. But as portraiture has become ubiquitous, it hasn’t gained in power. The ability to pierce or possess the viewer is still given to only a few images out of the billions.