Major anti-online piracy laws like PIPA/SOPA and ACTA are designed to protect the intellectual property of businesses like the US movie industry.
Hollywood cites yearly losses of billions of dollars to illegal internet downloads as justification for new legislation. (source, PDF)
But what do the numbers say?
See our data and calculations: http://www.bit.ly/movierevs.
(And, um, if you can supply worldwide DVD sales figures, please get in touch!)