They also can combine voice with instant messaging and online file sharing.

Another differentiator is that Skype is free and simple to set up, and it costs us virtually nothing for a new user to join the Skype network, which is why we can offer the service for free.

We have 2 million users in the U.S. and about 13 million worldwide in more than 200 countries.

In fact, we just surpassed our first 1 million simultaneous users online.

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

With our work at Kazaa, we began seeing growing broadband connections and more powerful computers and more streaming multimedia, and we saw that the traditional way of communicating by phone no longer made a lot of sense.

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.

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

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

Skype is easy enough to use so that people don't need to be tech savvy - a lot of users just want to communicate with their friends and family, and they find this is the easiest, cheapest way.

We have just started, and if you compare the number of people using Skype to the number using a telephone network around the world, we're still just starting.

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

What we are doing is taking advantage of the broadband Internet to provide basically unlimited free calls to anyone at a higher voice quality than they can with the phone lines.

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

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.

They also can combine voice with instant messaging and online file sharing.

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.

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

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

Angry Birds is one of the fastest-growing online products I've seen, growing even faster than Skype, and the company has done a brilliant job of extending it across different platforms and merchandise.

As an entrepreneur, if you're the originator, you need to be faster than ever.

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.

If you want to be an entrepreneur, it's not a job, it's a lifestyle. It defines you. Forget about vacations, about going home at 6 pm - last thing at night you'll send emails, first thing in the morning you'll read emails, and you'll wake up in the middle of the night. But it's hugely rewarding as you're fulfilling something for yourself.

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.

Surround yourself with smart, dedicated people - to build something isn't a one-man show. It's more important to have smart people who really believe in what you're doing than really experienced people who may not share your dream.

When we look at investing, we always think about 'how defensible is this, how likely is it that somebody is going to copy this.' E-commerce tends to be something easy to copy because it's execution.

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.

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

Video is moving online in a big way. It's proven to be a challenging market for some companies that start out as a pure Internet company such as Joost.

People have really gotten comfortable not only sharing more information and different kinds, but more openly and with more people - and that social norm is just something that has evolved over time.

The writer who can't do his job looks to his editor to do it for him, though he won't dream of sharing his royalties with that editor.

People say New Yorkers can't get along. Not true. I saw two New Yorkers, complete strangers, sharing a cab. One guy took the tires and the radio; the other guy took the engine.

That past is still within our living memory, a time when neighbour helped neighbour, sharing what little they had out of necessity, as well as decency.

File sharing is our radio; that's the way people hear our stuff.

Sharing is sometimes more demanding than giving.

Women's propensity to share confidences is universal. We confirm our reality by sharing.

And I have to credit David Jacobs with the opportunities he gave me. He was totally into sharing the creation of characters. David put together a show that told the story of people over many years' time and that was greatly enjoyable. Though nowadays that is frowned upon.

I'm very comfortable in having a strong team. I'm very comfortable in sharing the limelight with the team.

A large family makes you accept sharing your parents.

He who negates present society, and seeks social conditions based on the sharing of property, is a revolutionary whether he calls himself an anarchist or a communist.

I know somebody from university who's called Phil Collins and I think there's something terribly unfortunate about sharing a name With somebody who either is famous or becomes famous.

Well, I enjoy sharing in the dangers that we ask our men and women in uniform to share in almost every day.

It was very hard to get any records, so the only source for us to really hear what was happening was listening to the Voice of America. We would be taping all the broadcast and then sharing the tapes and talking about it.

We've done it in intelligence sharing and certain elements of security. There were parts of the department, in fact, that worked very well in Katrina, like the Coast Guard and TSA.

In the sweetness of friendship let there be laughter, and sharing of pleasures. For in the dew of little things the heart finds its morning and is refreshed.

A smile is the light in your window that tells others that there is a caring, sharing person inside.

Despite all the technical improvements, it still boils down to a man or a woman and a microphone, playing music, sharing stories, talking about issues - communicating with an audience.

Folks, I've had the best seat in the house. Thanks for sharing it, I'll see you down the road.

The President should spend his time going after the terrorists rather than sharing sensitive counter terrorism information with countries that sponsor terrorism.