Seek A Tweet
Seek A Tweet is a Google Maps based site to search for Twitter messages by location.
To search for Tweets at a particular location you need to click on the map. The latest Twitter messages from that location are then loaded beneath the maps. The map includes a radius slider control so you are able to adjust the area you wish to search.
As well as the latest Tweets the profile picture of each person who has tweeted within the search radius appears beneath the map. By hovering over a picture, you can see where they are from.