#BBCtrending: Ashya King brother's YouTube savvy
3 September 2014 Last updated at 12:32 BST
Naveed King was a video blogger posting antics with his friends on YouTube, like many other 20-year olds. But after his little brother Ashya fell ill and was diagnosed with a brain tumour, and his family fled to seek treatment abroad, his YouTube channel became a highly effective one-man PR operation giving their side of the story.
Video journalist: Greg Brosnan