In Japan, Nicovideo (Japanese call this service Nico Nico Douga) is a known user generated content service similar to YouTube. Users in Nicovideo create new videos by remixing and adding new features to existing content. These remixed videos, sometimes called "MAD", are also tagged by users, employing a shared set of categories (tags).
In this project, the author(s) tried to understand "What happens in nicovideo" by visualizing the inherent tag co-occuring networks. Tag co-ocurring networks on Nicovideo represent relationships of content and subsequently, evolution of content. These are genuine complex networks and share such features as scale-free structure and small world ties.