Look for when the environment is changing - the big shift now is mobile Internet. It's really happening big-time. The way you interact with services on a smart phone compared to the Web is quite different, so there's a huge opportunity.

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

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

When we started Skype, if you look at analyst reports, no one forecasted it as a big business. Also when Google started, it was not fashionable to be in search. It's not trying to do the obvious - that's the hard part.

The Chinese market is very, very unique.

If you can use a Web browser, you can use Skype.

Today, over one million people now make their living on eBay, which is astounding.