Can you hear me OK? furnace commend report writing for school ivory effort Launched seven years ago, Twitter has become a big hit around the world – used by governments, organisations and individuals. It has more than 200 million regular users, contributing more than 400 million posts a day. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])