Selena Gomez knocks Justin Beiber off top spot
Selena Gomez has knocked boyfriend Justin Beiber off the top of Billboard's new Social 50 chart.
The countdown ranks the most active artists on the world's leading social networking websites YouTube, Vevo, Facebook, Twitter, MySpace and iLike.
Buzz surrounding the release of her third album, When the Sun Goes Down, and new movie Monte Carlo helped give Gomez the edge over Bieber.
She also posted a much-publicised video of her embarrassing first meeting with crush Shia LaBeouf on YouTube.com.
Her new film, Monte Carlo - which she stars in with Gossip Girl actresses, Leighton Meester and Katie Cassidy is due for release in August.
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