The pie charts give information about the percentages of Australians using Facebook, Youtube and Twitter by five age groups in 2011.
Overall, people aged under 50 were the majority users on all three social media platforms in Australia in 2011. In contrast, the elderly age group was the smallest proportion of users.
In 2011, the Facebook users among Australia accounted for the largest proportion at 28% in the 35-49 bracket, followed closely by in the 18-34 bracket at 29%, while the remaining age groups were all under 20%. Likewise, the Youtube users constituted 30% in the 18-34 bracket, followed by 26% in 35-49 bracket. In addition, the proportions for other three age groups ranged from the low of 9% to the high of 20%.
In terms of Twitter, the 35-49 age group made up for 40% of social media users in 2011, being the largest, which was more than twice as high as those people aged over 65 (18%). The second largest proportion of Twitter users was in the 18-34 bracket, constituting 29%, while the other two age groups were both under 10%.