Nico Nico Douga

Nico Nico Douga is a Japanese video sharing website managed by Niwango.

It doesn't seem likely that Nico Nico will ever be available in English, Simplied Chinese, or Korean for a variety of reasons.

Since Hiroyuki Nishimura is the director of Niwango, it has more in common with other Japanese sites such as 2channel and Futaba Channel

As with YouTube, they have a wide variety of copyright and userbase issues. Unlike YouTube, this stems from the massive number of users who are otaku, who upload footage and/or snippets from video games, music, and anime.

Also, they have a premium membership system (which costs roughly $5 a month).

It is currently the 148th most visited website in the world.