If you are using WPA2, the only thing they're going to be collecting is a long/lat -> SSID map. This is very useful for assisting in geo-location, so I don't kn

If you are using WPA2, the only thing they're going to be collecting is a long/lat -> SSID map. This is very useful for assisting in geo-location, so I don't know why you'd want to turn it off. If you have SSID broadcasting enabled, it's public, and it helps other people detect your network, including those outside your home, easily. I don't see how knowing your SSID/location is any worse than geo-IP, either way, your location can be identified a good majority of the time. The real purpose of this system is to enable location API on the client without waiting for satellites. It's only going to get worse with BlueTooth LE beacons, which will soon be showing up everywhere and pinning your location down to the nearest meter indoors.