WrongSizeGlass writes "CNET is reporting that the GAO's study of big media's piracy claims has raised some questions. (Here are the study's summary, highlights [PDF], and full report [PDF].) 'After spending a year studying how piracy and illegal counterfeiting affects the United States, the Government Accountability Office says it still doesn't know for sure.... The GAO said that most of the published information, anecdotal evidence, and records show that piracy is a drag on the US economy, tax revenue, and in some cases potentially threatens national security and public health. But the problem is, according to the GAO, the data used to quantify piracy isn't reliable.'"