I remember when my kid came into our room freaked out thanks to falling into a YouTube hole that left her scared. She started on the Angry Birds game and it ended up on some scary anime clip. YouTube can be a really great resource. As a homeschooling Mom I use it all the time, but am always worried what video will pop up during search or after a video ends.
YouTube has made parents a little more secure with the new YouTube Kids app. I love this! There is so much good, funny and educational videos out there and now kids can safely explore all YouTube has to offer. This app will definitely go onto my kids tablet!