Opera houses in the world are not equal regarding social networks. You will see for instance that 3 opera houses have a facebook facebook community larger than 300 000 (Sydney opera House, The Arena of Verona, The Metropolitan) !
Have a look at the following infographics. I have made it using data collected on 23 November 2014. You will be able to select your view (twitter or facebook) by clicking on the relevant radio button.
The larger the area, the larger the community ! Also, feel free to mouse over the blocks of the chart. The precise number of community members will appear below the block ! Enjoy !
“Infographic of tweeter and facebook communities of major opera houses in the world” by Ramzi SAIDANI is under terms and conditions of the licence Creative Commons Attribution 3.0 France