From Torontoist.com:

Last Monday—using data gleaned from Rami Tabello’s IllegalSigns.ca—Posterchild stenciled solicitations for feedback below three illegally-run fascia signs downtown (“persistent violators,” as he put it). A play on the now-ubiquitous “How’s My Driving?” slogan typically seen on the back of big rigs, the stencils feature the number of the City’s Building Division, which is, among other tasks, responsible for sign permits.

More on the intervention here.