Layer By Layer: The Graffiti Archaeology Project

John Nack writes:

The Graffiti Archaelogy project uses a Flash interface to let visitors navigate to different heavily tagged spots (links at left), then see the work at various stages (links at bottom). Using the M & N keys to cruise back and forth in time, I'm reminded of watching time lapses of plant life exploding on a surface, dying, and being reborn. [Via|Link]