Russ Crupnick, president of the NPD Group’s Music and Movies division
“One of the music industry’s questions has been when will paid download stores compete head-to-head with free P2P download services. That question has now been answered. iTunes is more popular than nearly any P2P service, and two other paid digital music offerings have also gained a level of critical mass. These digital download stores appear to have created a compelling and economically viable alternative to illegal file sharing.” via