Fewer people put down their nachos this year to post about the Super Bowl on Facebook or Twitter.
On Facebook, the level of activity worldwide for Super Bowl 50 dropped 25 percent compared with last year, according to the social giant. Twitter posts among U.S. viewers was down 49 percent, according to Nielsen figures, after record-breaking Super Bowl action on social networks last year.
CBS's TV audience of 111.9 million for Super Bowl 50 was also down — although less dramatically — from Super Bowl XLIX on NBC, which registered 114.4 million viewers.
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This year, Facebook said about 60 million people joined the Super Bowl 50 conversation during with 200 million posts, comments or likes, as the Denver Broncos defeated the Carolina Panthers 24-10. In 2015, for the Patriots-Seahawks game, Facebook said more than 65 million users generated 265 million interactions.
On Sunday, 16.9 million tweets were sent by 3.8 million unique authors about CBS's Super Bowl 50 telecast, down from 25.1 million tweets about Super Bowl XLIX, according to Nielsen.
Tellingly, on both Facebook and Twitter, the most-social event from Super Bowl 50 wasn't from the game itself: that came during the halftime show featuring Coldplay, Beyonce and Bruno Mars sharing the stage.
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On Twitter, the most-tweeted minute for Super Bowl 50 was at 8:44 p.m. ET, when 162,000 tweets were sent in the minute following the halftime show, per Nielsen. The highest volume on Twitter for last year's Super Bowl occurred when Patriots rookie Malcolm Butler intercepted a pass by Seahawks QB Russell Wilson with 20 seconds left in the game, producing 395,000 tweets per minute.