There’s no denying 2017 was a difficult year, with several issues affecting our community and our advertising partners. We are passionate about protecting our users, advertisers and creators and making sure YouTube is not a place that can be co-opted by bad actors. While we took several steps last year to protect advertisers from inappropriate content, we know we need to do more to ensure that their ads run alongside content that reflects their values. As we mentioned in December, we needed a fresh approach to advertising on YouTube. Today, we are announcing three significant changes.