As the accusations against Jimmy Savile continue to mount, how do you investigate historic allegations of sexual abuse? Why did no one come forward to report it? And why was it allowed to go on for so long? What is the future for Pakistan? It's a nation troubled by corruption, by insurgencies, by poverty, and extremism, but it seemed to reach a new low this week when the Taliban shot a 14-year old- schoolgirl, who'd campaigned for female education. And the beauty of going viral with your video - what do you have to do to make that happen?