Yale’s Luis Vuitton sidewalk chalk advertisement has survived three days of rain. That’s some durable chalk. The chalkers where apparently “raising awareness about this issue.” This isn’t the first corporate chalking I’ve heard about. IBM’s “Peace, Love & Linux” campaign in 2001 left long lasting chalk stains around the streets of San Francisco. They paid a fine to the city to clean it up. I’ve also seen innocent children adorning suburban sidewalks and driveways with chalk ads for the 123456789 corporation. Shameless.