Otaku Japan these days to tell the world an important three terms

Hello. akiba-otaku. Otaku has recently agreed to introduce the term Otaku's important to tell the world to easily three terms. One is "nikoniko-douga". You tube and a brief description of a Japanese version I think. The second is "hatsune-miku". Sing a soft, but as a virtual explosion of popular idol. The third is "rojyou-raibu". Recent live on the streets of Akihabara, extremist arrested comics can be a big deal. The next time these first from a term referring to the shaft. Enjoy.