Why did Facebook spend $2bn on virtual reality?
26 March 2014 Last updated at 19:43 GMT
Facebook has announced it will buy Oculus VR, a Californian company which specialises in virtual reality products, for around $2bn (£1.2bn).
The company's flagship product, the Oculus Rift, is a goggle-like "immersive" headset for video gaming.
But what now makes virtual reality so important to Facebook and a host of other businesses? Rory Cellan-Jones reports.