Poking around on Flickr, there seems to be some consensus on tagging images with the Australian postcode in the form pcNNNNN, I guess it’ll have to do until there are tools around that can put the location information into the EXIF headers in a defined way, read it back out, and pass the results around. Plain tags just don’t have enough context — is a girl’s name, a state in Australia, or a city in British Columbia in Canada? Here are Flickr’s photos tagged for my workplace — , homes; new — and old — and Melbourne .