YouTube has added the option "SafetyMode"

While Youtube site is in a growing and increasingly more content is uploaded on this website, often can be difficult to avoid videos with inappropriate content, that the children should not see them. It is very hard to write a keyword on the site and have come across hundreds of indecent videos.

On the left side at the bottom of Youtube (in countries and languages), you will see an option called "Safety Mode". Selecting this option, all the videos inappropriate will be blocked by default by YouTube. By implementing this service absolutely free, your children will be protected from videos containing explicit or nude, inappropriate to their age.

Safety Mode is an opt-in option that can be turned on and off, or be blocked by default in the browser of your choice (you need to opt-in choices, in each browser you use).