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.