comScore , a leader in measuring the digital world, today released its comScore Video Metrix report for November 2007, indicating that more than 75 percent of U.S. Internet users watched a video online (including both streaming video and progressive downloads), averaging 3.25 hours of video per person during the month. Google Sites, which includes YouTube.com, increased its video market share by more than two percentage points to 31.3 percent from October to November.
75% is massive. I'm amazed even 75% of Americans are online. Are we talking 75% of those aged 16 to 65, or of the whole population? If it's 75% of the whole population then it means it's practically 100% of the internet-able age-ranges as there are easily 25% who are variously very elderly, too young to use the internet, illiterate or blind.