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.

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

Think of Slide as a giant media network for people to transmit information. The content that's in there now has been provided by users - it's whatever they want it to be.

You can have successful teams where people hate but deeply respect each other; the opposite (love but not respect among team members) is a recipe for disaster.

Technology has come a long way since PayPal.

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.

Mobile is the perfect example of what is enabling economic growth in the technology sector.