It's worrisome to learn, as this article explains, that your iPhone has been tracking and recording your movements since June. Hey, never mind you. It's really worrisome that my iPhone has been tracking me since June. It's logged a trip to the Comic-Con in San Diego, a visit to Indiana, two excursions to San Francisco, 17 trips to Souplantation for Creamy Tomato Soup, 935 trips to a Ralphs Market to buy cat food and sometimes food for me, etc.
Since I haven't been anywhere I shouldn't have been, I'm not worried about sizzling revelations. I do think though it's a real bad precedent for a product to do this without telling us and without including a little "off" switch. Let's see what the Apple folks do in that direction.