Youtube is the one of the Top most website for watching videos online. It has millions of videos with people watching from all around the world. Youtube has many interesting and advanced features like subscriptions, Channels, Search filters, Personal accounts and lot more.... Even lot of people used to learn many things from the online tutorials. Youtube even allows the people to Earn Money by displaying ads.
These ads are seen from past few years. The ads that appear before your video depends upon what video you are going to watch. Theses Ads are one of the important source for YouTube’s revenue,they forces the viewers to watch them.