Rolling Rock, the beer company famous for that mysterious number '33', is trying yet another oddball marketing approach - moonvertising. A clever gag or a scientific marvel? We'll all find out on March 21, the next full moon, when the company attempts to project their logo on to the face of our favorite orbiting neighbor - the moon. In the mean time, those who are over the age of 21 can check out their web site and put your own message on their virtual moon.