Wikipedia
Niconico
, formerly known as ''' or "Nico-dō" for short, is a video sharing website in Japan managed by Dwango. "Niconico" or "nikoniko" is the Japanese ideophone for smiling. As of September 2015, Niconico is the eighth most visited website in Japan. The site won the Japanese Good Design Award in 2007, and an Honorary Mention of the Digital Communities category at Prix Ars Electronica 2008.