Track your GPS-enabled phone through Google Earth

It's called Mologogo. You download something to the phone and through the website, you can see where the phone is on Google Earth. So, maybe for when you've lost your phone, you want to track your kids, you're trying to meet up with or direct your friends who have the same setup, or you're travelling and you want to keep people up-to-date (can post present location and trail to site/blog).