What do you think about GPS Tracker?
So there's this app in AppWorld called GPS Tracker that I think is pretty interesting. It allows you to run a software that can load at startup that relays your location to a website called instamapper.com... First thing in my mind was battery, battery, battery... Wouldn't a software that was continuously running in the background and sending my location just kill my battery? Well as it turns out, I guess it used to be in previous versions, but the developers addressed that and now it seemingly provided little change if you set it to send once every 120 seconds or so. Memory turns out to not be a problem either... I would have thought this would be problem number 2, with a memory drain, but it hangs in there just fine.
I think this is great in case your phone decides to walk away. You can just wait until the moron settles in for the evening, call the cops or handle your own business... Done and done.