This is really cool. Bing Maps now has an option to create and embed a Twitter map in your own website.
To create your own Twitter Map go to the Twitter Maps application in the Bing Maps Application Gallery.
You can create a Twitter map for any location. More impressively you can even filter Tweets. For example, you can filter the map to just show Tweets mentioning 'health care'. You can also define the size of the map that you want to embed in your site.