11.   The obvious downside to publishing graffiti handiwork on the Internet is that the police tracking graffiti vandals can collect evidence online.

12.   Violent crime is declining, the squeegee guys are in hiding, and the lives of a lot of fare-beaters and graffiti vandals have been made miserable.

13.   Singapore is well-known for caning graffiti vandals, but this famously tidy city-state now has a place where rogue painters can spray away.