You know those ubiquitous ads offering to help you track down your high school friends, with a list of the states in the US? Increasingly I've been seeing them offering to track down people who went to Jakarta Raya High School.

I assumed that they can tell from the code of the ISP originating the request to look at a page that it is in such and such a location, but the software is not sophisticated enough to work out which locations are not in the US.

Bingley