You know what’s cooler than having hundreds of millions of people use your product every day? Having a billion people use it in one day.

That’s what happened for Facebook for the first time on Monday when more than a billion people logged on to the social network, according to a post on CEO Mark Zuckerberg’s page. That’s one in seven people worldwide.

That means that a billion people potentially saw the ads that help generate the revenue that has powered Facebook’s growth. In particular, Facebook has been at the forefront of the shift toward earning ad dollars via online video, the fastest-growing digital advertising category.

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Zuckerberg didn’t mention revenue in his post. Instead, he wrote that he is proud of the community built by the social network and said that connecting the world is making it a better place. “It brings stronger relationships with those you love, a stronger economy with more opportunities, and a stronger society that reflects all of our values.”

The milestone comes as the social network has been moving aggressively to monitor user habits and expand its product offerings to include instant messaging, photo-sharing and now a new virtual assistant. It has also explored moving into the e-wallet space and is reportedly looking into developing a credit rating system based on a user’s network.

While a billion users a day is nothing to scoff at, the company—as always—is dreaming bigger. Last month, Facebook finished construction of a drone that it hopes will provide Internet access to remote parts of the world. That way everyone everywhere can be wished a “Happy Birthday” by 300 people they haven’t spoken to in years.