How do they know who's post code it is? I mean, I could enter random post codes, and they wouldn't know who's the post codes were. In truth, movements seem more worried about Google earth. If I recall correctly, the Australian government really doesn't like it. I think they do record data about what you search for etc, but they mainly use it to target ads. I trust Google more with the information because they seem unwilling to share it with other organisations/governments.