"Run This Town" by Jay-Z, Rihanna & Kanye West tops the 3 million mark in digital sales this week. The song reached #2 on the Hot 100 in October 2009. It won two Grammys: Best Rap Song and Best Rap/Sung Collaboration. It's the third 3-million seller for Jay-Z, the sixth for West and the ninth for Rihanna, which is more than anyone else in digital history.