See the full article for a detailed YouTube snapshot
“Our average user spends 15 minutes a day on the site,” he said. “They spend about five hours in front of the television. People say, ‘YouTube is so big,’ but I really see that we have a ways to go.”
To that end, Mr. Walk leads a team of about a dozen engineers, designers and project managers who are fine-tuning YouTube to give its users what they want, even even when the users aren’t quite sure what that is. The goal is to get them to spend a few more minutes on the site every day.