Contact
Send questions, reports of errors or factual problems, and privacy requests to the address below.
What to send
- Errors in statistics, historical events, or country names (with a source link if you can)
- Awkward English or Japanese wording
- Bugs and usability problems
- Privacy-related questions
Replies
This is run by an individual, so replies can take a few days. We may not answer every message, but we do read and act on reports.
Last updated: 2026-10-20