HPV vaccine for gay men?

Merck, the makers of Gardasil (the HPV vaccine now being given to women) is conducting a trial of 4000 men, including 500 self-identified gay men, to test the effectiveness of HPV vaccination in men to prevent anal cancer. Although I think this vaccine should be given to all gay men, especially "bottoms," I'm glad to see the company pursuing this study. Obviously there are far more women who are eligible for the vaccine than gay men, but that they're still going after this market is a good sign, in my opinion.