We've all used Google Maps to find directions and view street level locations, but did you know that you can get Google Maps mashups there too? TaxiWiz is an example of a Google Maps mashup - it's a combination of information of where to find taxis in a city with a Google Map of the city. It even gives you the estimated fare for any route that you map!
GOOGLE QUICK TIP #13
When you search a location in Google Maps, look at the very bottom of the left side bar for a link to User-created maps in the results listing. That link will take you to maps created by other people who have made Google Maps mashups.
For example, when I typed in a Google Maps search for Mission District San Francisco, under the user-created maps link, I found a map highlighting the 49 Mile Scenic Drive of San Francisco. This is a great map to use to get acquainted with the city because it also includes photos of most of the locations.