Twitterlocal allows you to follow posts on Twitter made by people from a geographical location of your choice.
Now a downloadable AIR desktop application, this is a must-have tool for local newspaper or broadcast journalists who want to monitor Twitter chat in their local beat.
For national journalists, it could be a useful tool to monitor chat around a breaking news event in a specific location, anywhere in the world.
Try, for example, entering Melbourne, Australia into the application with a 10-mile radius. You will see Tweets about the bush fires (if you are doing this around the date this post was published!)