Superb idea for a topic on this publicly-accessible site where punters post about the importance of discretion!
Here are some similarly great suggestions for thread-starters on other sites:
- Online security forum: "What passwords do you use?"
- Identity theft discussion blog: "What's your mother's maiden name and what was the name of your first pet?"
- Fascist dictatorship resistance group: "What are the exact GPS coordinates of your favourite secret meeting places?"