Extract from the Evidently case study:

We helped the David Cornfield Melanoma Fund inspire young people to make a melanoma self-check part of their regular routine. ‘Dear 16-year-old me’ featured melanoma survivors sharing their stories, specifically the lessons they learnt the hard way, with their younger self. Despite zero paid for media support, the film passed 1 million YouTube views in its first week and eventually became the 7th most shared ad in the world for 2011. The original upload has been watched more than 6.2 million times on YouTube by people in 215 countries. And that’s not including the subtitled versions that have been created, or the unsolicited re-postings elsewhere (the Spanish language version alone has been viewed over 940,000 times).