It is unfortunate that nations such as the US and NZ have either passed or are trying to pass laws that ensure there is no such thing as public domain (ACTA, SOPA, PIPA, TPP, and who can forget the sneaky implementation in NZ of 'The Copyright (Infringing File Sharing) Amendment Act of 2011')
Public Domain Works Can Be Copyrighted Anew, Supreme Court Rules
http://www.nytimes.com/2012/01/19/bu...ices-rule.html