Running helped me learn how to deal with failure, and failure is a big part of the Internet business.

As you start building the product, don't assume that you know all the answers. Listen to the community and adapt. We had a lot of our own ideas about how the service would evolve. Coming from PayPal and eBay, we saw YouTube as a powerful way to add video to auctions, but we didn't see anyone using our product that way, so we didn't add features to support it.

YouTube is becoming much more than an entertainment destination.

The iPad - is that a phone or a computer? If I put it on my wall is it a TV?

I have the Sony Reader; I have the Kindle as well. I don't really use either of them, to be honest. I'd rather sit down with a cup of coffee and a newspaper than read all my digital books.

I think the success around any product is really about subtle insights. You need a great product and a bigger vision to execute against, but its really those small things that make the big difference.

There's always going to be a place for YouTube.