There are 72 hours of video uploaded to YouTube every minute. An engineer, Craig Mansfield has worked out how much it would cost per year to pre-screen all that video for copyright infringements and the answer is somewhere close to Google's annual revenue.

Mansfield calculated that a team of 199,584 judges—or equally qualified individuals—would be required to watch and rule over the video, which in turn would cost $36,829,468,840.

Google's revenue for 2011 was $37,905,000,000.

[Craig Mansfield]