By Jonathan Davies

Half of the world's entire online population is now on Facebook, according to the social network's latest figures.

Facebook said the number of people who check their profile at least once a month rose 13% to 1.49 billion in the three months to the end of June - roughly half of the estimated three billion people who use the internet.

The social media giant said 65% of those use Facebook on a daily basis.

The jump in user numbers helped Facebook to report a 39% rise in revenues, which stood at $4.04 billion (£2.6bn) in the second quarter.

As has been the case in previous figures, mobile advertising accounted for a huge chunk of Facebook's revenue. In fact, it now accounts for more than three quarters of all the money Facebook makes.

Facebook founder and CEO Mark Zuckerberg described it as a "strong quarter", despite shares falling 3% in after-hours trading in the US.

The fall is likely due to a fall in profits. Facebook's costs and expenditure grew by 82% to $2.8bn. That put a 9.1% squeeze on profits for the quarter to $719m.

Zuckerberg also confirmed that the Oculus Rift virtual reality headset would go on sale in the first quarter of 2016.

"3D content is the obvious next thing after video.

"Video will be huge, gaming will be huge. Once you start to get a critical mass we can get a social app which we are more specialised in," said Mr Zuckerberg.