Snapchat: still valued at over $20 billion, even after Wednesday’s disappointing update. Photograph: Dado Ruvic/Reuters

In the two months since Snap went public, one big question has hung over the social-media company: can it survive a full-on attack from Facebook, whic(...)

Gamers wear high-definition Oculus virtual reality (VR) headsets.

Facebook’s Oculus Rift, set to go on sale Wednesday, is intended to usher in a new era of virtual reality computing. But if Wall Street’s expectatio(...)