Eyes Without a Face

In Wired this month: Face Blind, an article about prosopagnosia.

Developmental prosopagnosia came to light in large part because of Internet groups. Before that, most people born with the condition assumed they were just bad with faces. It's not the type of thing most would go to a doctor about, and even if they did, their physician probably couldn't help, because many doctors are unaware of it. In many ways, this is a neurological condition discovered by Yahoo.