Google recently announced 'Safety Mode' for YouTube. When you opt in to Safety Mode, videos containing mature content, objectionable material, or age restrictions will be filtered out of the site's search results. If a user inputs a direct link to a mature video, Safety Mode blocks viewing. You also have the option of 'locking' Safety Mode. When you see the 'Safety Mode' option at the bottom of any YouTube video page, you can choose to opt in to the service and lock that preference with your YouTube account password (you have to be logged in). That setting will be locked until the password is input to change it. It can not be unlocked by any other YouTube account.
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