Skype: How the online chat revolution changed lives

It's been 10 years since Skype came on to the scene.

The internet chat service wasn't the first to allow people to make voice calls over the internet.

But by allowing the public to make computer-to-computer calls free and using peer-to-peer technology - which meant that connections improved the more people who used it - it helped popularise the concept.

Today Voip (voice over internet protocol) and video chats are something many of us take for granted. And Skype faces competition from a multitude of rivals, including Google Hangouts, Apple's Facetime, Blackberry's BBM, Tango and Viber.

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