"Familiar with Apple's 'I'm a Mac, I'm a PC' ad campaign, in which David Mitchell plays uptight Windows PC to hip Mac alternative, Robert Webb? You'd be forgiven for thinking that was the choice: Windows or OSX.
"Actually, there's a third way. Linux is an open source operating system, its computer code freely available to anybody who wants to use, tweak or improve it. It's supported by a range of software--open source and familiar names including Acrobat, Skype and RealPlayer--that will do pretty much anything most people do on a Mac or Windows machine..."