This is from Autumn 2012, when Nogizaka appeared at  CoFesta 2012-
http://www.cofesta.jp/2012/en/archive/archive-list.html?aid=54&pnum=0on their site, CoFesta explains what it is:
CoFesta( JAPAN INTERNATIONAL CONTENTS FESTIVAL ) is the world's largest 
comprehensive contents festival.The events connected with the contents industry 
like games, animation, manga, characters, broadcast, music and film are held in 
cooperation with each other.
 
While various contents from Japan influence and improve each other and 
cooperate in media technology industry to inform of our statement, CoFesta 
aims to be the world's largest contents festival which create new capability 
and spread it abroad widely.So if you want to communicate with the rest of the world, you might
need to speak another language than Japanese.....
Who Ya
Gonna
Call?Mikumo Ando, of course:(of course later, when asked what 
台場 / Daiba meant,
 the girls fell a bit short.... google tells us it means fort)