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.

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.

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

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.

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.

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

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.