Nine million Aussies use Facebook daily NINE million Australians - more than one third of the population - visit Facebook every day, according to the social network firm's first detailed breakdown of its local user figures. Most of the major social media companies, including Facebook and Twitter, have previously refused to release detailed daily user figures - especially at a national level. But Facebook broke rank on Monday in a bid to show off its muscle to potential advertisers. "In Australia, more than nine million people are on Facebook on the web and more than 7.3 million on mobile every day," the company said. The Australian figures are similar, on a population ratio, to Facebook's user figures in the US and UK. There are more than 128 million daily Facebook users in America, from a population of 316 million. And the UK has 24 million daily Facebook users, from a population of just over 63 million. It comes despite research published last week by experts at the University of Michigan and the University of Leuven, Belgium, which suggested Facebook can make some users feel unhappy. The two-week observational study concluded that the more Facebook users logged onto the site, the worse they felt - though its authors pointed out that longer-term studies were needed to validate the findings. Facebook has previously only ever revealed its global and monthly user figures. That's in line with many other media websites, which often report user figures on a month-by-month basis. But Facebook said that's becoming an old-fashioned methodology. "In this world, understanding who comes back at least once a month is only part of the picture," it added. Instead, businesses should focus on people who come back online every single day, because that is how they live their lives. People are online numerous times in a single day and are constantly connected; creating, sharing and engaging with the content that matters to them. The daily user figures confirm Facebook as the biggest social media site in Australia. Twitter has never published national user figures, but experts agree there are around two million accounts in Australia. David Cowling, owner of the Sydney-based Vivid Social agency, compiles monthly social media user figures and his latest estimates suggested Twitter has 2.16 million users in Australia. Mr Cowling's figures, compiled from a variety of sources including Google's Ad Planner tool, suggests YouTube Australia receives more than 11 million unique visits per month. There are said to be just over one million Instagram users in Australia.