Regardless of where you are, as long as you have wi-fi on and there's a wi-fi router nearby, even in the absence of street view cars or anything like that, all

Regardless of where you are, as long as you have wi-fi on and there's a wi-fi router nearby, even in the absence of street view cars or anything like that, all it takes is one person using a GPS-enabled device near you to geo-compromise your router (and in some cases, your wi-fi client devices). Apple, Google, and others use different databases, but if you are on a Mac, then any one person using GPS on iOS near your wi-fi access point has forever pinpointed it in Apple's databases, and when you use Mac OS X Location Services, it draws on Apple's MAC address-to-geolocation database. Similar for Android devices and Google. Or Microsoft devices and Windows.