Facebook said last night that its profit in the third quarter jumped 11% to $891m as advertising revenues soared.
The world's biggest social network also said the number of monthly active users hit 1.55 billion, up 14% from a year earlier.
Revenues leapt 41% from a year ago to $4.5 billion. The vast majority was from advertising, and mobile accounted for 78% of ad revenues in the quarter, compared with 66% a year earlier.
"We had a good quarter and got a lot done," said Mark Zuckerberg, Facebook's founder and chief executive.
"We're focused on innovating and investing for the long term to serve our community and connect the entire world," he added.
Analysts say Facebook has become an online advertising juggernaut as it seeks to leverage its huge base to expand into other applications such as Instagram and WhatsApp, and delve into virtual reality projects through its acquisition of Oculus.
According to the research firm eMarketer, Facebook accounted for 8% of worldwide digital ad revenues in 2014 and is expected to reach 9.6% by the end of this year.
Google is expected to remain the market leader with 30.4% share this year, down from 32% last year, eMarketer estimates.
In mobile, Facebook's share of digital ad revenues this year is expected to be around 17.4% in a market worth some $72 billion.
