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12 People You Forgot Started On YouTube

Posting videos online led these people to fame and fortune. Catch the next generation of YouTube celebs in BlackBerry UK's LevelUp series.

1. Justin Bieber

2. Conor Maynard

3. Greyson Chance

4. Karmin

5. Soulja Boy

6. Arnel Pineda

7. Cody Simpson

8. Darren Criss

9. Charice

10. Bo Burnham

11. Lucas Cruikshank

12. Michelle Phan

Check out Emma Blackery, the next YouTube music sensation and partner in the Level Up project:

View this video on YouTube