Over 6 billion hours of video are watched on YouTube each month - Full Stats

"Viewership
More than 1 billion unique users visit YouTube each month
Over 6 billion hours of video are watched each month on YouTube—that's almost an hour for every person on Earth
100 hours of video are uploaded to YouTube every minute
80% of YouTube traffic comes from outside the US
YouTube is localized in 61 countries and across 61 languages
According to Nielsen, YouTube reaches more US adults ages 18-34 than any cable network
Millions of subscriptions happen each day. The number of people subscribing daily is up more than 3x since last year, and the number of daily subscriptions is up more than 4x since last year
YouTube Partner Program
Created in 2007, we now have more than a million creators from over 30 countries around the world earning money from their YouTube videos
Thousands of channels are making six figures a year
Monetization
Thousands of advertisers are using TrueView in-stream and 75% of our in-stream ads are now skippable
We have more than a million advertisers using Google ad platforms, the majority of which are small businesses
Mobile and Devices
Mobile makes up almost 40% of YouTube's global watch time
YouTube is available on hundreds of millions of devices
Content ID
Content ID scans over 400 years of video every day
More than 5,000 partners use Content ID, including major US network broadcasters, movie studios and record labels
We have more than 25 million reference files in our Content ID database; it's among the most comprehensive in the world
Content ID has generated hundreds of millions of dollars for partners"
Source:  YouTube Press Statistics, retrieved 26th August 2014