I have just been reading the essay on the media - really fascinating stuff.
Makes you think of all your own ghosts out there - in letters, in photographs, in memories even. You don't need to have experienced fame. For instance I found it quite amusing to see a photograph of myself with two others on (shall we say) a sister site with the caption labelling me as unidentified (or similar). Facebook users will be familiar with the dread that comes so suddenly when an update arrives to say that you have tagged in a photo. And then you see the link, view the car crash, expect it to be a school photograph or a candid shot, and find it is not you, not even a ghost, just an inanimate object, an association made by a friend, a warm joke.