Justin Bieber posted on Instagram that he has Lyme disease, a bacterial illness spread by ticks.
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Psy's 'Gangnam Style' music video became the most viewed video on YouTube, passing 800 million views.
Justin Bieber reached one million followers on Twitter.
Justin Bieber was born in Stratford, Canada.
Justin Bieber made his first tweet at 8:27 pm, promoting his single 'One Time.'
