YouTube has announced several changes to its standards to help advertisers avoid having their advertising appear with inappropriate content. The changes include:
1. YouTube is individually vetting each video before it is included in Google Preferred channels (the most popular content);
2. In order to become a part of YouTube's Partner Program, video creators will now have to have at least 1,000 subscribers and at least 4,000 hours of viewing time in a one-year period; and
3. YouTube is launching a three-tiered system, which gives advertisers more transparency into (and choice about) brand safety.
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
http://www.adweek.com/digital/youtube-is-finally-addressing-brand-safety-fears-with-these-3-changes/