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Cool site! You have Australia's country code as AS - it's AU. (eg type Melbourne Australia to replicate). Cheers!

Different standards use different abbreviations. Here, Tom is using FIPS: see http://en.wikipedia.org/wiki/List_of_FIPS_country_codes.

If it were my site, I'd probably also use AU (and AT), though.

And it shows Austria as AU which should really be AT.