Bieber was discovered in 2008 by American talent manager Scooter Braun, who came across Bieber's videos on You Tube and later became his manager.

Since then he has been consistently gaining followers at an average of 24,000 per day.

The accounts also serve marketing purposes; for example, Bieber's music video for "One Time" only began selling quickly after it was uploaded to You Tube.

13 at Marquee Las Vegas, and we can’t wait to hear the full version.

Twitter has become a 24/7 press conference for Beliebers — and we love it!

With a global fan base, termed as "Beliebers", and over 40 million followers on Twitter, he was named by Forbes magazine in 2012 as the third-most powerful celebrity in the world.

He had earned an estimated US million in the previous 12 months. According to Jan Hoffman of The New York Times, part of Bieber's appeal stems from his You Tube channel.Bieber released his third studio album Believe on June 19, 2012, and it became his fourth chart topper in the United States, debuting at number-one on the Billboard 200.Bieber has received numerous awards, including both Artist of the Year Awards at the 2010 American Music Awards and the 2012 American Music Awards, and was nominated for Best New Artist and Best Pop Vocal Album at the 53rd Grammy Awards.Bieber was signed to Raymond Braun Media Group (RBMG),and then to an Island Records recording contract offered by record executive L. He became the first artist to have seven songs from a debut record to chart on the Billboard Hot 100.Bieber's first full-length studio album, My World 2.0, was released in March 2010.At a recent concert, one even went so far as to make a sign that said "Marry Justin Please" in big black block letters.