[artinfo] Soap Not Spray Can: Reverse Graffiti Art.

[Janos Sugar]

Paul "Moose" Curtis creates his art by erasing dirt from public surfaces.
British authorities aren't sure what to make of the artist who is 
creating graffiti by cleaning the grime of urban life. The Leeds City 
Council has been considering what to do with Moose. "I'm waiting for 
the kind of Monty Python court case where exhibit A is a pot of 
cleaning fluid and exhibit B is a pair of my old socks," he jokes.
http://www.neatorama.com/2006/09/13/soap-not-spray-can-reverse-graffiti-art/