Google's CEO Eric Schmidt has joked that the rate of video being uploaded to YouTube is "disturbing".
Speaking to journalists in Sydney last week, Schmidt said 10 hours of video is uploaded every second to the company's video sharing site.
"It's moderately disturbing, I think. It gives you a sense of the scale YouTube has become."
Asked about how Google will generate income from the site, Schmidt said the company has not yet found the perfect monetization strategy for the site so far.
"Our primary focus is on the users, not on the revenue side ."
He said there are a series of tests that the YouTube engineers are working on which are quite different from the way in which people have traditionally thought about monetizing products.
"So where Google works is we try things until we find something that really works well. So we are in that period now. I am quite confident that we will invent something really compelling."