Mr Krishna Rao is worried about adult videos on YouTube and writes:

At 75, I think I can address you as Amit as per our tradition! I am an ardent follower of your website - Digital Inspiration - you give very useful hints; one of the recent best is the OpenDNS software that can be used to block undesirable and pornographic sites from accidental or clandestine viewing by children or for that matter even adults.

I recently blocked YouTube as it also carries lot of pornograghy; is there any way to block only porno in YouTube; if it is possible please let us senior citizens know.

Yes, there’s an easy way that might prevent any adult Youtube videos from showing up on your computer. Just go to youtube.com, scroll to the bottom left and toggle the link that says “Safety mode is off.”

Details here - Make YouTube Safe for Kids.