Yesterdag there was a report on the radio regarding GPS's.
The gest of it was that a trend has been spotted where a vehicle is stollen or hijacked - with the GPS in the vehicle. Apparently the thieves sell the stolen vehicle and then keep the GPS.
A few weeks later the house of the vehicle owner is broken into.
They reckon that a person that can drive around in an expensive car has some nice "toys" at home. All they have to do is to switch on the GPS and search for the addresse called "HOME".
The reporter warned people to NOT store their home adresse as HOME. If you do not know where you live, then store it under another name, but NOT "home".
Maybe store your mother-in-law's adresse as "home". ;)