YouTube announced Thursday that it has turned off the comments feature on tens of millions of videos that feature young children. This is after a bunch of advertisers pulled out of YouTube because of pedophiles flooding the comments sections on videos featuring young children. On that front, this is a very welcome move. But it's also complicated. Creators on YouTube rely on comments to create their communities. It can make us nervous when platforms that rely on user-generated content show how much control they really have. Host Molly Wood talks with Kelly McBride, senior vice president with The Poynter Institute for Media Studies. McBride says tools used to scan for certain types of content don't always work. Today's show is sponsored by Pitney Bowes, Kronos and WellFrame.