FBMobileDrawerHere’s a neat party trick: if you meet someone new, and you know they’re a Facebook user, guess that they didn’t look at Facebook on their computer today. You’ll be right about half the time.

As a part of Facebook’s quarterly earnings call, CEO Mark Zuckerberg revealed that the company’s mobile products, which were once a laughingstock, now make up a key part of the company’s business.

“Now, 49 percent of our revenue comes from mobile, and 48 percent of people who use Facebook in any given day are only accessing it from mobile. That’s almost half of people only using Facebook from their phones,” Zuckerberg said. 48 percent of the people who access Facebook every day only access the social network over mobile and not through the company’s desktop website.

It seems like there’s a good chance that number will keep growing. If other websites are any indication, Facebook will soon see evidence of what has already happened with ESPN: more people accessing its content through mobile apps than just visiting the company’s website.

It seems there’s a reason why Facebook is so heavily focused on mobile advertising–almost half their users won’t see ads any other way.

Previously on GeekWire: Facebook’s 3Q earnings exceed expectations with revenue over $2BESPN mobile properties saw more unique visitors than ESPN.com in September for first time ever

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