Sponsored content is getting bigger, bolder and more expensive. One case in point: General Electric's latest digital-content hub, World in Motion, which rolls out today.World in Motion is a warehouse for GE's articles, videos, graphics and social media posts (mainly Instagram photos) from around the globe. Some content is from GE's owned websites. Other articles are from publishers that GE pays to produce content on its behalf, such as The Economist and Quartz.It was Quartz -- the upstart business-news site from Atlantic Media -- that created World in Motion. Continue reading at AdAge.com