Very insightful PDF report by Pewinternet.org about the US demographics and usage numbers of tablets, which may help Australian marketers to better understand and target tablet users as well...
Demographic groups most likely to own tablets include:
Trends in tablet ownership
Almost every major demographic group experienced significant year-to-year growth in tablet ownership
between April 2012 and May 2013. In several cases, groups that already had the highest levels of tablet
ownership saw the greatest percentage point increases over the past year:
Bjorn Behrendt is a serial entrepreneur with an extensive knowledge about online retail, payments and mobile commerce.