There are lots of different definitions of "art," and urban art (a.k.a. graffiti, a.k.a. tagging) can be tough to call. As I ride around Tucson on my bike, I see plenty of ugly graffiti. So what about something like this?
(This is on the back of the building at 3591 E. Golf Links, at the corner with Richey Blvd; I shot it from the vacant lot west of 3602 E. 34th St.)
I don't have an exact definition. If it seems to me like the painter(s) put some thought into the design, and it looks "artistic" (whatever that means), I snap it... and let you decide.
Happy 2010 -- and new decade -- everyone!