How to Play with Google Maps and Twitter APIs
If you are interested in creating your own Twitter Map then this article on the woorkup website should prove very useful. The article explains how to use the Twitter and Google Maps APIs to create a map showing Tweets within a defined distance of a location.
The location of Tweets is determined by Twitter's new Geotagging API, but will also fall back on the location given in Twitter profiles, if no location is available from the Tweet.
The article includes a demonstration map that displays 25 Tweets on a Google Map. If you want to create a Twitter map that only displays Tweets containing a specific search term it is possible to add a query to your call of the Twitter API (e.g. add "&q=olympics").
Now with just a little tweaking of the demonstration map you should be able to create your very own TwitterVision, #UKSnow or Trendsmap.