While tromping around downtown Los Angeles during a weekend conference, we discovered some artists hard at work on several unique multi-story advertising panels. From upcoming movies to automobiles to popular restaurant chains, the ads were amazing works of art, spray painted onto the exterior walls of various hotels and other buildings. In the last several months, the city of Los Angeles had taken the property owners to task for advertising that did not meet city-established guidelines. A municipal court ruled in favor of the property owners just in time for us to benefit from watching...