麻豆约拍

A new app called 'tbh' meaning 'to be honest' is Facebook's latest purchase. The app, which encourages people to be nice to each other, has proved popular with teenagers. It was downloaded five million times in just nine weeks. Rachel Thompson, the lifestyle correspondent for the website Mashable, tells us why it appealed to Facebook.

(Photo: A view of and Apple iPhone displaying the Facebook app's splash screen, Credit: Brendan Smialowski/AFP/GettyImages)