"It has been estimated that Australians will spend about $968 million in 2010 on illegal (overseas) sites,'' gambling researcher Dr Sally Gainsbury told the National Association of Gambling Studies conference.
Dr Gainsbury, from Southern Cross University's Centre of Gambling Education and Research, said internet gambling worldwide was forecast to grow in value from $21 billion in 2008 to $30 billion by 2012.
"It is highly accessible, fast and can be played alone at home with just a credit card and unregulated sites provide few player-protection measures," she said.