The data is not gathered by WarDriving [part 2]
I seem to have a lot of smart friends, another one observed this:
"When using the javascript geolocation API, the user explicitly agrees to use the location service. In firefox, the default location server is, surprise, google. The user actually accepts to send data in order to get the position. This means ip address, mac, wifi macs around, base station (in mobiles), gps, and any other info the might be helpful. Thus, you get your position, and google has all the info around you in exchange. Quite clever. And scary. The users work for them."