Google measures the popularity of YouTube by how many hours of video its users upload per minute. In 2007, that number was six hours per minute. By 2010, it was closer to 24 hours and that number had doubled to 48 hours by May 2011. Today, Google announced that the amount of video uploaded to YouTube increased by 30 % over the last eight months. Its users now upload a total a staggering 60 hours of video per minute.
Google also announced that the number of total YouTube views now exceeds 4 billion views per day from across the globe – an increase of 25% over the last 8 months. As Google proudly notes, this is "the equivalent of more than half the world’s population watching a video every day, the same number as there are US $1 bills in circulation, the same as number of years since there was water on Mars."
To celebrate this milestone, Google also launched the rather goofy onehourpersecond.com to highlight just how amazing this number is by connecting it to random facts and trivia ("In 24 seconds of upload to YouTube, one full day elapses, and the Nyan Cat says "Nyan" over 345,600 times.").