Today it's Samsung’s turn to tell the world just how it did last quarter. The South Korean tech giant has become a successful competitor to Apple, selling tons of tablets, phones and more. But like Apple, its recent success means an ever higher bar of expectation, from profits to innovation. And yesterday Facebook's stock was up on good earnings news, but another Facebook story from this week caught our eye. It's about the developing world, where Facebook wants to be the portal for mobile users connecting to the Internet without a smartphone.