@siu
nah, that's just his offhanded comment.... also, AFAIK, youtube (from the chap 1) celeb aren't considered mainstream in Japan...
I'm pretty sure there was another chap/day from either her or someone around her after that... but i could be wrong...
Edit: OK, I see, she's not an Idol, a celeb yes, but doesn't really fall under the Idol category, our Chad MC just say it offhandedly is my opinion....