1. The GMap class exports methods to manipulate the map's center and zoom level and to add and remove overlays (such as GMarker and GPolyline instances). It also exports a method to open an "info window" to display information. http://www.google.com/apis/maps/documentation Structured information about an address Google Maps API http://www.cs.uml.edu/~echo/

2. Yahoo Maps API Traffic information overlay Overlay traffic information for given area http://developer.yahoo.com/m aps/ajax/V3.4/example/traffici nfo.html/

3. Google Maps vs. Yahoo Maps http://www.sergeychernyshev.com/maps.html