"Kamkar couldn't figure out everybody's address, but in a talk he gave at a security conference last month, he showed how he could take advantage of a basic programming error in certain types of home Wi-Fi routers to get them to reveal their MAC addresses. Armed with that information, he then showed how he could use a publicly accessible Google geolocation databaseto figure out where people lived. If someone visits his website from a buggy router left with default access control settings, he can figure out where they are located."
http://www.pcworld.com/article/205062/after_google_incident_wifi_data_collection_goes_on.html

edit: imho forum mafia mozme pomaly zrusit, .. alebo upgradnut ? :D

// So make what is yours and do not take what is others, for this is The Universal Law!
For if You break this Universal Law, The Universe will surely react to it, This is known to The Profane as Karma.