Around 27 percent of Internet users surveyed by Pew said they downloaded either music or video files over the Internet, and 48 percent of all those who downloaded said they use sources other than P-to-P networks or premium online services, such as Apple Computer's ITunes, to get music or video files. Pew estimates that about 18 million Americans are swapping files using nontraditional means based on the survey results.About 25 percent of the downloaders said to have received files through instant messaging and e-mail clients.
The report also suggest that lawsuits have caused people to avoid usage of peer-to-peer (p2p) programs such as Kazaa. Nearly thirty percent of the respondents said they quit using these programs because they feared to get in trouble.
More info at PC World