In Dragulis v. Kappa Map Group, a court recently cofirmed that a photo licensed under the Creative Common By-SA 2.0 license could be used for commercial purposes. The plaintiff photographer had uploaded his photo to Flickr and made it available under CC-BY-SA. The CC Sharealike licenses are roughly equivalent to copyleft licenses for software. In this case, the defendant complied with the terms of the license, including its notice requirements.
