Every so often an idea comes along that has the potential to change the game. When it does, you find yourself saying – “Sheesh, of course that was going to happen. Why didn’t I predict it?” Well, I didn’t predict this happening, but here it is, happening anyway.

In short, Alexa, an Amazon-owned search company started by Bruce Gilliat and Brewster Kahle (and the spider that fuels the Internet Archive), is going to offer its index up to anyone who wants it. Alexa has about 5 billion documents in its index – about 100 terabytes of data. It’s best known for its toolbar-based traffic and site stats, which are much debated and, regardless, much used across the web.

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I am quite sure this means that Yahoo and Google will have to stare hard at their own (somewhat limited) search services and APIs, and think what they might do to compete, that much is certain. And if this starts to gain traction, all of a sudden, Amazon is a major search player, right next to Yahoo, Google, MSN, and IAC. A9+Alexa+web services= hmmmm….

Via John Batelle’s Searchblog