It is the second most common way of starting a relationship, according to a study by psychologists at the University of Rochester in the US.
It now beats conventional dating methods like pub and bar meetups and is second only to friends and family matchmaking.
From 1976 to 2011, the number of religious young adults has reduced by over half.
About 26% of all young adults in 2011 claimed to have no religion, a rise from 12% in 1976.
The growth in the number of users has been fuelled by: Australia, just like the rest of the world, has been experiencing a steady increase in the number of internet users over the last two decades.
There are now 86% Australian households, representing 7.7 million, with access to the internet up from 65% in 2008.
Social dating in Australia is a departure from the usual online dating setting where people communicate for weeks or even months before actually meeting.
Compared to traditional dating where a person had to go to the bar or some other social meeting place with hopes of meeting a prospect, the internet has given users access to all types of people in a short time.
Online dating has lost its stigma over the past 10 years.
Results Are Matching Up With Traditional Dating A 2012 study by the University of Stanford revealed that the strength and quality of relationships initiated online were at par with results from conventional dating.
Although the internet has made it easier for people to secure casual encounters, people who are after committed relationships are managing to find them online.