I’ve just added a link to another worthy cause. This one the Eldred v. Ashcroft campaign.
This site collects material related to the constitutional challenge of the Sonny Bono Copyright Term Extension Act, which extended by 20 years both existing copyrights and future copyrights.
They have a good about page which neatly summarizes the case.
Please give them your support, the likes of Disney, Time Warner, and the RIAA are crippling creativity firstly in the US, but ultimately the world over.