posting violations? or identifying violators?
My innards tell me I'm not a Nazi -- although I, too, favour public humiliation for proven crimes. Some municipalities put a sign outside the residence citing the offense. They take the sign down when the violation has been addressed.
However, I'm not sure about posting their photos on the Net (some people don't look as good as El Guapo). Remember how some TV shows blurr the face of a supposed law violator? Well, I presume this was done to accomodate some law on keeping ugly faces from public view.