What does a dancing baby have to do with copyright? You might be surprised! It all started when a mother posted a brief video of her baby dancing to the Prince song "Let's Go Crazy" to share with family and friends. She received a takedown notice from the rights holder (Universal Music corp.) and her video was promptly removed from YouTube. But then she decided to fight back. A San Francisco Appeals Court just ruled that rights holders must think about whether or not a video is fair use before sending a take down notice.