YouTube is a social media platform and website where users can share videos. It was founded in 2005 by Steve Chen, Chad Hurley, and Jawed Karim. YouTubers are content creators who upload videos, often posting to their personal channels. A significant portion of the adult population in the United States uses YouTube, with many also relying on it for news. The platform has evolved significantly, with the original "Baby Shark" video now being the most-viewed video on the site. YouTubers can earn money through advertising, and the amount they earn per view varies.