How global is your social circle? Using twittermap.tv you can get the answer to this question by visualising the locations of your Twitter followers on a Google Map.
And this is only one of the features of twittermap.tv.
To see where your followers are on a Google Map you just need to enter your Twitter user name. Your location is then shown on the map with a map marker. Your followers are displayed on the map using their profile pictures.
As well as visualising the locations of your followers you can view all the tweets sent from different locations. For example, you can view all the tweets sent from New York. You can also use twittermap.tv to find all the Twitter users at a location.
Finally, you can search twittermap.tv for all tweets about a specific term. The tweets about that subject are then shown on the map and in the map sidebar. A really nice touch in this visualisation of tweets is that if one of the tweets is in reply to another user a polyline is drawn between the two users.