Companies in Silicon Valley invest a lot in understanding their users and what drives user engagement.

When I started eBay, it was a hobby, an experiment to see if people could use the Internet to be empowered through access to an efficient market. I actually wasn't thinking about it in terms of a social impact.

I had the notion that, OK, so now we have all of this wealth, we could buy not only one expensive car, we could buy all of them. As soon as you realize that you could buy all of them, then none of them are particularly interesting or satisfying.

I have always been of the opinion that the right kind of journalism is a critical part of our democracy.

People spend hours constantly checking and tweeting and Facebooking. And it's cool to check up on your friends and see what's going on in the world, but it's not cool to spend five hours of your day on the computer looking at the Internet.

Even many of the teenagers who feel confident on navigating the web simply don't have the skills needed to 'write and create' digital tools, not simply consume them.

I think social media is good for promotion, stuff like that, but people are so negative. People are too negative. If you read the comments, it's just too negative.

The Internet has become the go-to place to toss out ideas in the hope that they could lead to a job, but it has also become the place where people go to find the best ideas, creating a lopsided dynamic that tends to benefit people in power.