Pew Internet & American Life Project ran a survey among 1371 Internet users to reach its estimates, which include users of file sharing networks (LimeWire, Kazaa) and legal services, such as Apple Computer’s ITunes Music Store. Downloaders rose from 18 million to 23 million in the period.
“While online music services like ITunes are far from trumping the popularity of file-sharing networks, 17 percent of current music downloaders say they are using these paid services. Overall, 7 percent of Internet users say they have bought music at these new services at one time or another, including 3 percent who currently use paid services.” […]
“ITunes, which reached more than 2.3 million Americans in March, has added nearly a million unique visitors since October 2003,” the report states.”