Glympse - Share your location App for Android
'Glympse is the easiest way to safely share your location with someone in real time. Let others follow your location on a dynamic map. You choose who can see you and for how long. No sign-up needed and no new social network to manage. Recipients receive a link allowing them to view your ETA and location in real-time for the length of time you choose. When the timer on your Glympse expires, your location is no longer visible. Best of all, recipients do not need any special software to view your real-time map. Send a Glympse via SMS, email, Facebook or Twitter, and recipients can view it using any web-enabled device.'
This is a free app