alfaromeo points to a business feature (mysteriously available already) by one Paul Ford called "August 2009: How Google beat Amazon and Ebay to the Semantic Web." So read on for a bit of potential history from five years in the future.
It was pity stayed his hand. "Pity I don't have any more bullets," thought Frito. -- _Bored_of_the_Rings_, a Harvard Lampoon parody of Tolkein