You can view the GPS tracks stored by you and other people here. It is possible to upload GPS tracks (using GPX format) after logging in. In order to log in you need to register.
Don't forget login to view the list of your private tracks.
You can store a file with a GPS track, e.g. using gpx format, using a proper GPS device. A GPX file can be rendered on a satellite map using the GoogleMaps web services.