Green Graffiti

The following article: "Green Graffiti: Protest Art Gets Environmental" (http://www.huffingtonpost.com/2010/08/02/green-graffiti-protest-ar_n_660458.html#s119069&title=Santa_Ursula_Mexico) asserts that graffiti is green in the sense that it saves paper and other production materials. One could also subtract the environmental cost of running a gallery and hosting gallery shows. However, something about the metallic spray can and the smell that accompanies graffiti makes me doubt its true "greenness". Still, the art featured in the article draws attention to environmental issues by using pre-existing and under-utilized urban spaces that are available to anyone who walks by. Which seems pretty cool.