Wanna let your friends know where you at ?
Start using Google Latitude on your mobile phone ! And show it with this module on your Joomla! site
Google Latitude Module
Google Latitude is a location-aware mobile app developed by Google. Latitude allows a mobile phone user to allow certain people on to track their location. Via their own iGoogle accounts, the user’s cell phone location is mapped on Google Maps. The user can control the accuracy and details of what each of the other users can see — an exact location can be allowed, or it can be limited to identifying the city only. For privacy, it can also be turned off by the user, or a location can be manually entered.
It works out of the box, just put in your Google Latitude Id and start using it !
Look here to see it work !
