The question in my mind, when I read the headline, was how Rakuten stands regarding freedom to read. But googling in search of cooperation with national censorship, I can't find problems.
If you go by the adversary-of-my-adversary-is-my-friend principle, it's a good sign that the Great Firewall of China blocks their home web site, rakuten.co.jp:
http://en.wikipedia.org/wiki/Website...mainland_China