This is a small web app made using socket.io, mapbox.js and Twitter Search API. The app gets users' geolocation data and shows recent tweets within 100 miles of radius from him. The search API will first attempt to find tweets which have lat/long within the queried geocode, and in case of not having success, it will attempt to find tweets created by users whose profile location can be reverse geocoded into a lat/long within the queried geocode.
Currently, there's an unresolved bug in Twitter API which shows less data than expected.