Yahoo recently released a tool called Mapmixer. It allows you to overlay a map of your own on top of Yahoo Maps. You can make your maps puplic or private. For example I overlaid our evacuation map on top of Yahoo Maps and have made it privately available to our staff via our staff bulletin page. Below is an example of an embedded map, the USC campus...
Via Ogle Earth...
Technorati Tags: maps, USC, Yahoo Maps