We're all put on Earth for a limited amount of time. Am I using in a way that is great, or good enough, or wasteful?

If I see what you're up to on Facebook but I don't see your updates on Flickr, I'll still care about Facebook.

I've been developing mobile for years before anybody else really thought it was that important.

Technology has come a long way since PayPal.

Being an entrepreneur is not about being in love with an idea, it's about being in love with running a company.

The very first company I started failed with a great bang. The second one failed a little bit less, but still failed. The third one, you know, proper failed, but it was kind of okay. I recovered quickly. Number four almost didn't fail. It still didn't really feel great, but it did okay. Number five was PayPal.

You're going to pull out your phone and try to use whatever is the most appropriate app on your iPhone or your Android device. Yelp saw that very early on. And when we launched the mobile product, we saw immediate growth, and we were stunned.