The photo set became an Internet sensation, and was picked up by various sites and even featured on ABC News. Then, this spring 3M contacted the photographer and asked to use his photos for a marketing campaign. When they couldn't agree on a price, 3M said they would just copy his idea and have their own photographer shoot the photos. Is what they did legal? Technically. Was it fair? If you saw your images copied without credit, you probably wouldn't think so. The full story is here.