The successor to the World Wide Web
In two weeks’ time scientists in Geneva will throw the switch on the biggest development in global communication since Tim Berners-Lee, the inventor of the Internet, scrawled “www” on a blackboard in 1989.

Under the grid, the power of your machine — all those gigabytes, memory and gigahertz — will become irrelevant. No matter how primitive and cheap your computer, you will have access to more power than currently exists in the Pentagon.

The backbone of the grid will be computer centres filled with thousands of PCs linked together. Users will be able to use the programmes, processing power or the storage they need as if it all existed on their own computer. And it is seamless — a user could be sitting tapping into a handheld on a train in England, using an application on a computer in the US and storing files in Thailand and still have unlimited computer power at his or her disposal.
(Thanks to Eon for the info)