So is this some kind of meta-pirate joke? The source is ripped directly from the German Pirate Party website.
Author of the code: "I place this code in the public domain. I require no attribution." : https://github.com/zachstronaut/stop-sopa
Your research-foo leaves much to be desired.
This code as it stands is still fully copyrighted and copying it is technically a felony.
I'd be very interested if anyone knows of a genuine situation in which one can't disclaim the IP rights one is offering up in a CC0 license (some aspect of moral rights?). I'm thinking of the possibility of problems with heirs-in-title, or somesuch, choosing to assert a right that their successor (the work's creator) wished to give up ... but really I can't see why an heir should be allowed such a right.
?