72 hours of video are uploaded to YouTube every minute

"In May 2005 we first shared YouTube with the world. Seven years later, you’re the ones doing the sharing! We’re so honored that you’ve used YouTube to share how-to tips, political moments, home videos, comedy, music, and so much more.
Last year to celebrate our birthday, we wrote you, the YouTube Community, a thank you note for making our first 6 years so special. And on that birthday you gave us a great present by reaching a record rate of 48 hours of video uploaded to the site every minute. Well Community, this year, on our 7th birthday, you’ve outdone yourselves once again.
Today 72 hours of video are uploaded to the site every minute. Like many 7 year olds around the world, we’re growing up so fast! In other words, every single minute you now upload three whole days worth of video instead of two. That's 61 Royal Wedding Ceremonies, 841 Bad Romances, and 1,194 Nyan Cats."

Source:  YouTube blog, 20th May 2012

Earlier - 60 hours a minute announced in January