This document summarizes a legal case involving Goldieblox and the Beastie Boys and discusses fair use laws regarding use of copyrighted works in advertisements. It outlines that for use of another's work to be considered fair use, it must transform the original work and be for purposes of criticism or commentary rather than just for attention. Commercial uses weigh against fair use, but can be allowed if sufficiently transformative. The document analyzes similar court cases and concludes that ads face an uphill battle in claiming fair use and most companies would not want the publicity of a legal battle, as defending fair use can be expensive even if the use is legally right.