The index, issued twice a year, covers more than 90,000 publicly available hotspots round the globe linked with iPass. It doesn't survey Wi-Fi networks used in homes and offices.
The latest results show Australia had 35,779 Wi-Fi hotspot sessions in the second half of 2007, up from 12,346 sessions a year previously a 190 percent increase.
That put us between Japan, with 50,785 sessions, and Belgium with 22,764.
The US was No 1 with 1.1 million sessions, followed by the UK with 291,325 and Germany on 217,708.
London increased its lead as the world capital of Wi-Fi with usage rising by 156pc over the same time period last year.
Airports round the globe house the most sessions, followed by hotels, and cafes or retail centres. The most popular airport in the world for Wi-Fi was Chicago's O'Hare, with 78,810 sessions.
