Youtube site is one of the popular sites on WWW which has millions of users in a day. I find it usefull asI am engineering student so I can get my course tutorials on it. And I spend quite a good time on youtube. The only bad thing in youtube is that you cant download videos from this site. And in todays generations it creating a bad impact on the youngsters because they spent a lot of time on ut which is affecting their studies.
So everything comes with merit and demerits it dependa on you How do You look at it