A reader writes, “One more time, some lobbyists try to regulate the Internet with some of the stupidest laws or rules. SOPA (in US) is again one of this tentative to break down the freedom of citizen worldwide to preserve some archaic business model. As I have a preference for concrete action leading to a direct social improvement, I’ll explain how to do soap (it’s better than SOPA and more useful, please note the clever inversion of the letters). My soap recipe is released under the public domain dedication license (CC0).”