What is it that makes content social?
It takes two types of networks:
a social network
a content network
Content Networks like YouTube, Slideshare, Soundcloud, Listly, Visually, Scribd have emerged as a category in recent years.
It's worth exploring the advantages of social vs content networks
It's also worth exploring the 6 different types of content.
Video, Audio, Slides, Lists, Infographics & Documents