There are a whole bunch of people who don't like to shop. But there are also people, maybe, who even do like to shop but are very time pressured. And so shopping online can save people time.

AI is real and will change every industry. We are living in a golden age, and there is reason to be optimistic. There has never been a better time to be an entrepreneur and start a start-up.

Facebook originally got started around the same time as a bunch of the early smartphones and those platforms got started. So we didn't really get to play any role in developing that platform.

The unique proposition that we have is that we can link a digital ad back to a physical store purchase down the road.

Time after time, history ran over the luddites and romanticists, those who sought to restore the old and delay the new. And every time, history did it with faster, more reliable and more advanced vehicles.

Microsoft Research has a thing called the Sense Cam that, as you walk around, it's taking photos all the time. And the software will filter and find the ones that are interesting without having to think, 'Let's get out the camera and get that shot.' You just have that, and software helps you pick what you want.