The Error code 451 is now an Internet Standard, aiming at making censorship transparent and visible. I’ve been working with great folks on tools to make this easier, during the IETF (Internet Engineering Task Force) 99 hackathon.
My work consisted in creating a WordPress Plugin, together with Tara Tarakiyee, which will make it easier for Site administrators to block pages, while being able to mention the authority that has requested such a takedown. They are also able to report to a crawler when content has been marked as blocked.
Did I mention that we won the first prize of the hackathon?