Justin Bieber's Popularity Approaching Twitter's Group of Elite

Bieber Mania is growing on Twitter 

Two weeks ago, the 16-year-old pop singer from Stratford, Ont., was the No. 1 most tweeted about topic on the social media site, according to the tracking website www.whatthetrend.com. Last week he settled for second behind a little event called the Oscars.

Bieber has been on Twitter almost a year, but it wasn't until January that his popularity growth really