The word "Niconico" is a Japanese term meaning "to laugh" or "smile" while "Douga" denotes videos or movies. Niconico Douga is the No. 1 video community site in Japan with a plethora of fun video content that'll have you "niconico" in no time.
What sets Niconico apart from other video hosting sites? It's original commenting system, of course. Comments from its viewers display over the video screen allowing users to interact with one another in real time.
Niconico is home to a virtually endless library of user video content covering several genres such as Vocaloid, Sang_it, Danced_it, Played_it and Let's Play.