The kings of kids’ YouTube - A parents guide to You Tube vloggers

AS your child grows, so does their online profile, the number of apps on their phone, games on their iPad and YouTubers in their search history (which they probably know how to delete.)
Kids, from aged six upwards, are now very at home on YouTube, often reaching for the app’ rather than a remote control — and it’s highly likely they are are watching one of these four YouTube stars. So who are these vloggers (video bloggers) and why are they so successful? And are they as harmless as your kids will tell you?