If you have the time, would you mind elaborating a bit more on the following? I'm always curious (as an American living in Japan) about small/independent developers who split across two or more cultures.
1. How much of your userbase is Japanese vs English-speaking?
2. Do you find that the goals the users work toward are different based on the language/culture? Are there any things that are language-specific?
3. Do you find that one set of users is stickier than the other?