I have to disagree on one part,
you can sell anything you shoot as art, if its a limited edition type thing then your bases are covered and you wont get in trouble ever. But if it turns into a commercial thing like you end up selling the image to nike or something else of a major commercial endevor, you are then violating the law, and would need a model release. you can make money off it, but market is as art or newsworthy and your fine.....
its not "totally" open to "anything" you want to do as max puts it, but prints for someone, sure !!!!