In this first of a three-part series, BBC News explores which webcast video has had the biggest impact on the web’s popularity.
It also looks at the rise and fall of popular casts, and which are still in demand.
This week: A young man’s webcast is watched over 20 million times, and a webcast dedicated to a porn star’s sex tape has been watched over 100 million times.
BBC News looks at how casting and webcasting changed the internet.
Part one: The internet, the casting and the casting webcast