I find TrackMyTour useful because the application does not need to be left open in order to keep working. This will definitely minimize battery consumption. This is a great way to keep friends in touch with you on a continual basis so that they are almost sharing your trip.
"This app is a free location tracking service that allows you to keep your friends, family and everyone else updated on the progress of your bike tour, hike, road trip or any other tour. Use the application to add waypoints whenever you want to highlight a location or say "Here I am!"
--Tip: This app requires 2.2.1 Software. Your friends can visit the website http://trackmytour.com/ at any time to see progress on your trip.
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