The telephone is a 100-year-old technology. It's time for a change. Charging for phone calls is something you did last century.

Then people started using it more and more and it became the most downloaded software on the internet.

Silicon Valley is the best place to start a tech company in so many ways.

If you could utilize the resources of the end users' computers, you could do things much more efficiently.

You shouldn't be afraid of failure - when something fails, you think, 'What did I learn from that experience? I can do better next time.' Then kill that project and move on to the next. Don't get disappointed.

When a business becomes successful seemingly overnight, no one knows about all the months and years you've invested, all the projects you've tried before that didn't work.

You have 1 billion people using the Internet with 200 million of those now using broadband internet connections, so the Internet has become a powerful network. It can carry calls.