This is awesome but it’s bringing back all my paranoid feelings.
Understandable. You can be as vague or precise as you want when you enter your location in the Customize panel: you can leave it blank, or just enter a city name or ZIP code, and it’ll just stick the dot for you in the middle of that area. (That’s why there are a lot of people mysteriously in the middle of Manhattan.)
Your location is only what you tell us in that Customize panel: we’re not tracing your IP or anything else like that. You can even be a joker and stick yourself in the middle of the ocean if you give it a latitude/longitude point.