POOLE, England, January 26 -- Accessing files and applications over the internet is changing the way we work and play. Has web 2.0 finally come of age?

Microsoft recently announced that a 'lightweight' web version of Office, which will include programmes such as Word and Excel, is currently in the works. It's a significant move by the software giant. In 2007, Office generated around $19 billion for the company, almost a third of its total revenue. But it's just the latest example of a paradigm shift tow......