'Broken window' theory at work downtown

You could see another sign of the rebirth of downtown Phoenix this week after some guy who calls himself 'Detox1' tagged a bunch of buildings in the Roosevelt neighborhood, including the historic Gold Spot Market. Ten years ago, my guess is that the graffiti would have stayed there for months. (In fact, the Gold Spot was a vacant building just 5 years ago.) But the handiwork of Detox1 (which sounds like an Instant Messenger screen name to me) was gone by mid-week at the latest, and in at least one instance had been painted over in a few hours.