retail news in context, analysis with attitude

Advertising Age reports that Walmart seems to relying on Justin Bieber to help in its sales rebound:

“Walmart is increasingly dominating the market for all things Bieber heading into the holiday season -- including exclusive lines of nail polish and a fragrance designed or inspired by the 16-year-old Canadian tween idol and Twitter phenom. Mr. Bieber has developed a very special if not entirely exclusive relationship with earth's biggest retailer, though Walmart declined to comment on just how extensive the partnership may yet become.

“On Oct. 27, Mr. Bieber told his 5.6 million followers on Twitter, where he ranks No. 5, just behind Barack Obama and just ahead of Ellen DeGeneres, that his acoustic album will go on sale first at Walmart Nov. 22. That's a day ahead of the general market release. Specifically, he Tweeted: ‘ACOUSTIC ALBUM hits WALMART on NOV 22nd!!!’.”
KC's View:
I know this is the best way to show my age, but here’s my question.

What the hell is a Justin Bieber?

I know I can Google him, or check him out on Wikipedia. But I just don’t want to.

Just from the Ad Age piece, I gather he is a 16 year old male teen idol who is selling nail polish and a fragrance. Which is already too much information.