We also have a conference call feature where up to five people can talk on one Skype call.

And the VCR did the same thing: the movie industry thought nobody would ever watch movies any more.

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.

It's extremely hard to build a company with a product that everyone loves, is free and has no business model, and then to innovate a business model. I did that with Kazaa, had half a billion downloads but that wasn't a sustainable business.

I hope that my investment into Atomico will become my best financial investment to date.

If you want to be an entrepreneur, it's not a job, it's a lifestyle.

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.