They’re routinely at the top of the pop music charts, and now Lady GaGa and Beyonce Knowles are on another important list- The 2010 Forbes List of the World’s Most Powerful Women. The “Just Dance” songstress landed at the #7 spot on the illustrious list, while Ms. Knowles came in at #9. And according to a rep at Forbes, we may see more of our favorite entertainment icons on future top 10 charts. "When we set out to identify this year's list, we decided it was time to look up and out into the broader culture. Our assessment is based less on traditional titles and roles and more on crea...