Facebook chief executive Mark Zuckerberg. Photograph: Stephen Lam/Reuters

If any company can take a cryptocurrency mainstream, it is Facebook. More than 2 billion people log into its family of apps and increasingly they wa(...)

Entrance sign to Facebook’s Menlo Park, California headquarters: the social network is keeping costs in check better than some investors anticipated. Photograph: Elijah Nouvelage

Facebook beat analysts’ profit estimates on Tuesday but missed targets for growing monthly users, and reported its slowest revenue growth in about six(...)