Billboard Now Counts YouTube Plays, so "Harlem Shake" is Number One

"Harlem Shake" is the No. 1 song in the United States of America this week, which means that now is your chance to listen to more than fifteen seconds of it. Baauer's meme soundtrack is the beneficiary of a Billboard rule change--YouTube views have been added to the Hot 100 calculations, joining physical and digital sales, radio airplay, and streams in the formula.