ONE DIRECTION-Harry Styles of British band One Direction performs on stage during the BRIT Awards 2013 at the o2 Arena in London on Feb. 20. (Photo by Joel Ryan/Invision/AP) by Jane Caffrey (CNN) -- Justin Bieber and Carly Rae Jepsen were launched into stardom after getting discovered on YouTube, and now "The X Factor" creator Simon Cowell is setting out to find the world's next big YouTube stars.
