Some Interesting Data from Columbia University on Perceptions of Copyright Infringement and Enforcement

This is particularly relevant in light of the pending Stop Online Piracy Act (SOPA).  High-level findings of the Columbia University study include the fact that "piracy is common", with 46% of American adults have bought pirated DVDs, copied files or discs for friends or family, or downloaded music, TV shows or movies for free.

http://piracy.ssrc.org/wp-content/uploads/2011/11/AA-Research-Note-Infringement-and-Enforcement-November-2011.pdf