artnet news: A Street Artist Is Suing a Grocery Chain for Allegedly Using His Work in an Oprah-Narrated Super Bowl Ad Without His Consent.
UPDATE: Brian Frye says "if you paint your work on the side of a building, you can't complain if people photograph it." But this is part of his larger view that all public art should be fair game (which he reiterates here: "I think if you put your work in public, the public can & should be able to use it however it likes").