I am a big fan of Google Maps with My Location (Beta). Google says:
See your location on the map, with or without GPS. Save time and tedious keystrokes finding where you are, what’s around you, and how to get there. Watch the video on the right to see how it works.
If you have a GPS-enabled device, this blue dot corresponds to your GPS location. At times, or if you do not have a GPS-enabled phone you might see the blue dot surrounded by a light blue circle (as shown on the right) to indicate uncertainty about your location.
CommonCraft developed a very simple, short and fun overview to explain how Google Maps with my Location works.
Click here for instructions to install the application on your cell phone.
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