YouTubery...

... in which David knows he still hasn't written about the SUMS camp.

Really, I just wondered if anyone knew off the top of their heads any bads/groups/musicians who have launched their music careers via youtube. I know Arctic Monkeys got big via MySpace, but I'm not sure if there's anyone that big who's used youtube.

Any and all help greatly appreciated! (It's for an assignment if that helps.)

:D