I was looking for a way of recording a trail or journey, combined with tagged photos or other location specific information.
I found an iphone app 'MotionX-GPS', I haven't looked to see if it is on andriod yet. You record a track, which includes time, speed, journey time, distance etc. You can pause the recording and take waypoint photographs. When the journey is completed the track is saved. The track can then be shared by email and picked up on a device that runs Google Earth. You then import the track where it shows up as a journey with pins marking the waypoints. The journey does not have to be saved to Google Earth as a layer, it can be kept as a separate temporary journey that can be recreated using the track at any time - this gets over the problem of several small groups undertaking the same activity.
, Switched On Computing