Does anyone know? If there are ones who know, are they telling, or will they? The mystery is the mystique? Well, I only know that one time I had an article show up on the Wall. Don't know how long it was there. I was thrilled. I called it up and noticed a typo, which I corrected. The article immediately disappeared from the Wall, never to reappear. I have written about this event - not a word in response. So, I have decided that curation is an urban myth.