Facebook says half the world’s estimated three billion internet users access the social networking site at least once a month.
The 13 percent growth in users over the the second quarter helped drive up revenue by 39 percent year-on-year to 4.04 billion dollars, 3.68 billion euros.
The company says that in the US people are now spending more than one out of every five minutes of their smartphone use on Facebook.
Mobile advertising revenue accounted for more than 75 percent of total revenue, the biggest single contributor.
Facebook shares have risen 24 percent over the past year.
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