“It is a confounding and eerie sensation to feel social while alone, thronged with invisible entities whose presence is felt yet who appear wholly absent. These entities are our twenty-first-century ghosts, shorn from their corporeal shells and set loose to glide through cyberspace at lightning speed and with startling precision. We call to one another in the darkness of the Internet, reuniting with hosts of friends and followers, but the act is all theater. There is nothing there in the dark except the dead gaze of a copy.”