Creative Commons license should be simple.

Most people are not specialized in Copyright law; however, almost all people have some copyrighted works. Other IP rights such as Patent or Trademark are not given automatically; therefore, when people want to obtain patent right or trademark right regarding their property, they should understand the concept of IP laws or consult with a person who is specialized in IP laws such as a patent attorney or an attorney at law. In contrast with such IP rights, when people want to obtain copyright regarding their original work, they don’t need to consult with IP laws or IP specialists.
Internet technology makes it easy for people to express their own expressions such as literatures, pictures and music and also make it easy to cite other person’s copyrighted work. These facts mean that there are a lot of pitfalls to post or cite something from the Internet. In case of citing some pictures on your website, have you concerned who has copyright of the picture or whether these pictures have been in public domain? Of course, you all are law students; therefore, you always think about these issues. However, lay person probably don’t care about that. They may think citing someone’s work without authorization is very trivial thing in the huge Internet world.
Under these situations, Creative Commons is useful to enlighten lay person about the existence of copyright. If someone uploads some original works on their website, he/she should think about the reason why he/she wants to publish his/her works on the Internet and he/she should use the Creative Commons license, if it fits for his/her purpose. The most important thing to keep the Creative Commons license useful is keeping it simple to be understandable by lay person.
Creative Commons also works in Japan. The board chair person of Creative Commons Japan is Prof. Nobuhiro Nakayama who is one of the most powerful authority in the field of IP; thus the action of Creative Commons may have big effect on the IP system in Japan.
http://creativecommons.org/international/jp/