Storify, a social media application, can be used to build stories using multiple content sources from the web. It's not all that different from the way journalists tell stories anyway (using text, photos, tweets and video) but Storify nonetheless provides an easy-to-use platform to ease the process of combining all these elements together to create a multimedia package.
As well, Storify can be used by any social media savvy user, not just a journalist or editor. Here's a sample story I threw together today after reading about sexual assault against women in the U.S. military.
I didn't write any aspect of this story, but even if I had, I could use Storify to enhance my text with video, tweets, photos or other stories.