Save for a few exceptions, Nintendo of America lets YouTube viewers comment their hearts away on whatever content Nintendo uploads to YouTube. Did you know that's not the case in Japan? Nintendo has turned off comments for all their videos on their Japanese YouTube channel.
Oddly enough, other game companies in Japan have done the same. Sony has blocked comments, as has Square-Enix and Capcom. There has been no information given on why this move was made. Anyone care to venture a guess?