YouTube has the most collection of videos. It is the third most searched website. We can upload any number of videos into YouTube for free provided that we are registered users. Ot is one of the greatest site after Google.It has all types of content like education, entertainment, sports and what not. Half of the time I stay at home, I use YouTube. It is more important to me than fb or WhatsApp. It is often said that the bandwidth occupied by YouTube in 2007 is equal to the entire bandwidth used by Internet in 2000. I never care to listen to classes at college. Infact, I learn all my subjects from YouTube. We can even earn money in YouTube by opening a channel. YouTube is a great invention.