Last Sunday, while checking into the Hill Street Cafe in Burbank using the foursquare iPhone app, I idly wondered, “Can I become the mayor of the North Pole?” So I tried checking into a nearby 7-Eleven. It worked. I tried the Griffith Observatory about 5 miles away. It worked. I tried Disneyland, which is about an hour away. It didn’t work, but I now had an afternoon hacking project.