Why Video Go Viral

The things that  was interesting to me was the double rainbow and nyan cat with all of different nyan cat.My opinion why people put videos on youtube because so they can be famous on the web but, though what they dont think about is what they do dumb things. Like throwing  basketball off the roof or setting basketball on fire and shooting three. What role it plays in my life like the group called Captiansparkez, minecraft player.Or Pewdiepie, horror games. Also Optic, black ops 2 group. So then i can black ops 2, minecraft gameplay. that is my opinion about viral videos on youtube.