Grafarc.org launched

My good friend Cassidy has been taking pictures of graffiti for years. A couple of years ago he realized that he had taken pictures of the same piece of wall many times, with many different pieces of graffiti on it. So he started a project to unify all of the pictures of all of the walls he's photographed and allow someone to peel back the layers and see how a wall "learns" (in the Stewart Brand sense) based on the graffiti that's on it. After a year of pretty intense effort--a lot of perspective correction and painstaking matching of photographs that were not meant to be matched when taken--the project is up at grafarc.org and it looks great. Go Cassidy!