YouTube, Evian, M&S: 5 things that mattered this week and why

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YouTube tightens ad controls
YouTube finally made a meaningful update to how it thinks about monetising content on the video platform. It follows a year that has seen swathes of advertisers boycott the site over mounting concerns about where and when their ads are appearing. The wide-ranging changes include a tightening up of the type of content that adverts can appear next to, manual reviewing of all videos on premium content in Google Preferred, better controls for advertisers and more