If I was an American, I would sign the Reclaim the Public Domain Petition. Via Cory Doctorow, who writes:
Lessig and company have authored a petition to Congress, asking them to pass the Eric Eldred Act to preserve the public domain. Under this proposal, rights-holders who want to retain their copyrights beyond 50 years need to pay a dollar per work at the 50 year mark (tax-deductible) to register the copyrights. When the Supremes heard the Eldred case, they heard that 98% of the works in copyright are lying fallow, earning nothing for anyone, out of print and not available to the public. In this proposal, the 2% of copyrights that earn money can go on earning money, while the remaining, vast majority will be rescued from history’s dustbin.