To take the Web to the next level — to move from Web 2.0 to Web 3.0 — the information in those documents will have to be turned into data that a machine can read and evaluate on its own. Only then will computers be able to take over tasks we now do by hand: find the nearest restaurant, book the best flight, buy the cheapest CD.

More at Business2.0

One point of clarification, just in case anyone is wondering…

Web 3.0 is not just about machines — it’s actually all about humans — it leverages social networks, folksonomies, communities and social filtering AS WELL AS the Semantic Web, data mining, and artificial intelligence. The combination of the two is more powerful than either one on it’s own.

Nova Spivack clarifies in his blog