The findmyfriends feature on my iPhone has been 100% accurate in identifying where my friends are.  If I had a child who went missing, and findmyfriends showed that they were in a house, I would <i>absolutely</i> hope that the police would go to the house and rescue my child.<p>I would also hope that the police would have enough sense to prevent any occupants from the house from going into the house and potentially destroying&#x2F;hiding any evidence, and&#x2F;or, powering down the iPhone.<p>As it was, I think the police showed restraint by <i>not</i> going into the house until they had a warrant.