It has been about two weeks since Yahoo released an API for Yahoo Maps. Since then, developers have started releasing "mash-ups" that overlay various types of info on top of Yahoo Maps. Here's a list of a few of them.
- Headlines from Yahoo News Overlaid on a Map of the U.S.
- Crime-map for Potrero Hill, a Neighborhood in San Francisco
- Map of San Diego Area Bloggers
- Map of Business and Services Located in a Milwaukee Neighborhood
- Map of Locations (Wineries, Restaurants) Used in the Film "Sideways"
The Yahoo Maps Web Services mailing list is a resource to monitor for new mash-ups.