“Sunset Portraits, From 8462359 Sunset Pictures on Flickr, 12/21/10”. A photo illustration by Penelope Umbrico for The New York Times Cyberspace after You're Dead, by Rob Walker. The sunset Flikr images knocked me over in the reality that we all see sunsets as memorable and we see each sunset through numberless sets of eyes. The article itself is a "heads up" that we leave much to Cyberspace when we die. It is time to leave a map for those who care.(A version of this article appeared in print on January 9, 2011, on page MM30 of the Sunday Magazine.)