Your phone's camera can geo tag photos (and other things) without needing to keep the history your location, it just turns the GPS on and gets the location then saves it in the picture then turns it back off. Unless your saving the logs to later tag pictures from another device.
That being said I utilize Google latitude and have turned on its tracking (thats how I found out how innacurate the aGPS location is). I've kept track of things I do for many years in a calendar and now I can take the data from Latitude to make things a little easier.