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.

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

It is very similar to companies like Google and other internet companies. When you go and search on Google you don't pay for that. But sometimes you click on an advert and Google makes money on that.

Skype is for any individual who has a broadband Internet connection.

People need to access Skype wirelessly, no matter where they are, and what happens is that we'll be taking advantage of the rollout of Internet everywhere - WiFi and WiMax in particular.

When radio stations started playing music the record companies started suing radio stations. They thought now that people could listen to music for free, who would want to buy a record in a record shop? But I think we all agree that radio stations are good stuff.

As an investor, what we're not looking for is 'oh this is a cool app,' it's 'is this something that can become a big business?' You need to find those that can become real businesses.