Google is collecting information from Wi-Fi access points from all over the world to enable it to speed up location services. Unfortunately it is gathering this information and maybe more, without the consent of the owners of the access point.
What’s more, Google is not only gathering data from public Wi-Fi access points but also from home and business users too. If you value your privacy, there is a way to stop Google recording your Wi-Fi access point’s location information. It’s reasonably straight forward to implement.