No, I'm not a fan of Miku Hatsune. All I know about her is her name and her shenanigans with a leek and/or megaphone scattered across the interwebs.
I don't get it. Is Miku Hatsune singer using this character as a surrogate in concerts and music videos or something? No offense but on top of all the cool stuff Japan has churned out in the past while I can somehow imagine them doing something as weird as that.