Big congrats, John.  That is really cool. 

Just started reading it this morning, and I really like the framework you use for the book in the "database of intentions".  Though I find that a very centralized view of the world and the Internet.  I'm wondering if the distributed attention happening outside of search is something you get into.  That's the market the browsers could leverage if they were smart and then possibly trump Google with an even richer knowledge pool.  Looking forward to the rest of it.