 Now to a company with a huge subculture you may never have heard of. Webtoon Entertainment is starting trading on the stock exchange tomorrow. Webtoon calls itself the world's largest web comic platform. More than 24 million creators posting work to the site. It's owned by the South Korean company Naver and has been around for about two decades. Marketplace's Stephanie Hughes has more on this market. As long as there's been an Internet, cartoonists have been interested in using it to get their comics out to readers.