With 4 billion videos being viewed every single day, you can bet that YouTube is being watched by viewers all across the world and from all walks of life. And the videos themselves are just as diverse. There are videos about cooking, hunting, basket weaving, car racing, funny videos, sad videos, how-tos and pretty much everything else you can think of. If you have a message that you want to unleash upon the world, YouTube is the perfect platform with which to do it. Your viewers may be waiting. Whether they’re at home on their computers, in their offices or they’re out and about with the latest mobile devices, you have a chance to make an impact on the entire world. One Orlando teen recently used YouTube to impact the world. Talia Joy Castellano used the video sharing site to start a makeup tutorial channel and, in the process, she managed to inspire and melt the hearts of YouTube users everywhere.