BTW, there's no Japanese version of current Privacy Policy, right? When you click プライバシー・ポリシー at the bottom of ja.wp, it follows to the English version.
There is a draft of an old version of it at http://meta.wikimedia.org/wiki/Privacy_policy/Ja
I don't know why that isn't linked from http:..wikimediafoundation.org/wiki/Privacy_policy - perhaps it hasn't been updated since the English version was approved.
Angela.