YouTube is a website just for people to upload video onto. This includes Flash, so it is one of Newgrounds's rivals on the internet. Many submissions from Newgrounds get put onto YouTube, either by the author reaching out to a wider audience, or someone else picking it up and copying it. Many authors have become satisfied with their work being put onto YouTube after the Newgrounds Channel was made as long as it would be in some way associated with the channel.
YouTube was founded in February 2005 by three former PayPal employees. The first video was uploaded a few days later, beta testing began in May, and the full launch was in November. YouTube quickly became the leading website for online videos, and was purchased by Google in October 2006 for $1.65 billion, more than 100 times YouTube's revenue in 2006. As time went on, YouTube also began making deals with studios to show television shows and movies, and streaming began in 2010. Today, it is the world's third most popular website, behind only Facebook and Google.