This template is: only for use in lists - for other uses, {{Census 2006 AUS}} is preferred. The link template is used with a single parameter, "id", which is the: alphanumeric key following "LOCATION CODE:" in the——ABS statistics pages. Or in brackets in the "second-to-top line in the ABS spreadsheet." The most common reason for broken links is an incorrect ID.
Usage: {{Census 2006 AUS link|id=}}