For the second year in a row the MCG was the most checked-in place in Australia for Facebook users.

For the second year in a row the MCG was the most checked-in place in Australia for Facebook users. Photo: Craig Sillitoe

Melbourne was the most popular place for Australian Facebook users to check-in to this year, with four of the city's entertainment and sporting venues topping the list.

The MCG was the most checked-in place in Australia for the second year in a row after the stadium hosted thousands of football and cricket fans throughout the year. It was also the 18th most checked-in place around the world.

Melbourne's Crown Casino came second, Rod Laver Arena third and Etihad Stadium fourth.

Sydney's tourist attractions Darling Harbour and the Opera House came fifth and sixth, and its Star City Casino, ANZ stadium and Bondi Beach were also in the top 10. Dreamworld on the Gold Coast also featured.

A spokeswoman for Rod Laver Arena said the peak times for check-ins on its Facebook page were the Australian Open, when 700,000 people visit the precinct within two weeks, and concerts throughout the year.

"When you look at the demographics of the people who are coming along to concerts, young people tend to be big users of social media ... it is not really the objective of our social media strategy, but the check-ins are a byproduct and it is fairly organic."

The management of Rod Laver used the Facebook page to promote upcoming acts and provide operational information, such as parking availability on busy days.

The most talked about topics by Australians on Facebook were "vote", "Princess Kate", "cricket" and "Kevin Rudd". The "grand final", "Tony Abbott", "Big Brother" the "GST" were also hot.

Facebook revealed the most popular themes for members from 14 countries. Sports featured prominently in all countries, along with local politics and scandals, and international news.

Globally the most talked about topics were Pope Francis, elections and the royal baby.

Meanwhile, Microsoft's Bing search engine recently released details about the most searched-for terms in Australia. It found more people searched for model Miranda Kerr than political leaders Tony Abbott, Kevin Rudd and Julia Gillard. And the most searched-for news stories were about international events such as the birth of Kate and William's baby, the Boston marathon bombing and Miley Cyrus' performance at the MTV Music Awards.

Google releases the most popular YouTube searches in Australia on Wednesday and the most popular search terms next week.