The FIFA World Cup 2014 kicks off today in São Paulo, Brazil. From June 12 to July 13, the participating 32 nations will play in a total of 64 matches (48 group stage games and 15 knock-out stage games).

This year's World Cup is predicted to be the biggest sporting event ever, surpassing the 3.2 billion viewers of World Cup 2010.

Recently, Crowdtap conducted a survey of World Cup viewers about their upcoming social media use.

Some 74.2% of survey respondents expect to be on social media while watching the game. Of those viewers, 43.4% said they expected they'll post on Facebook about the World Cup.

Moreover, among viewers who said they might share World Cup ads, 65% said they would share those ads on Facebook and 17.6% said they would share on Twitter.

To find out more about how World Cup viewers will use social media, check out the infographic: