10 Things You Didn't Know About Justin Bieber

The meteoric rise of singer Justin Bieber from YouTube phenomenon to teen idol has wowed the pop music world and prompted comparisons to none other than Michael Jackson.

Justin Bieber performs on Valentine's Day at the Palladium inLos Angeles.(Arash Ghadishah/ABC News)
More PhotosYet outside of a certain demographic -- i.e. teenage girls -- the young Canadian remains something of a mystery.