Indices of the world, unite!

I'd like to suggest an idea.  Within a short number of years, thanks to Amazon and Google Books, we'll soon be in a position to have available to us in textual format virtually all of the indices of all of the books which have ever been written.  Clearly this is somewhat of an exaggeration, but not too much, especially in the realm of non-fiction.  Imagine a research project which applied the techniques of computational linguistics to automatically link all these indices together, to provide a search and browsing resource between parts of books.  Something like this is already just beginning to happen with citations - but in a sense these are external (but still related) to the content.  Indices get you right in to a particular page.  Once in place, the Big Index, as I'd like to name it, then becomes an intellectual super-highway, a novel way to read (parts of) books, of seeing connections, of hopping, of surfing, of delving freely into the history of a concept, of tracing influence.  On top of this super-highway, us travellers can then leave notes, attach personal commentary (rather like the Amazon kindle shared notes).  In time, we'll be able to follow the paths of great thinkers themselves, what they read and thought about, which connections inspired them.  How they felt about it at the time.  Pieces of text will become cultural monuments, with many transit routes in and out, and with a wealth of personal commentary.  Indices, after all, capture a lot of intelligence and work in abstracting a book - why not put it to use.  Also, it side-steps the famous Borges taxonomy probem, and always remains fully open.   The internet in general, and sites like Wikipedia do some of this for you, but it isn't the same idea.  With my idea we're exploiting a probably well-crafted index designed around the time the book was written, probably with the involvement and approval of the author, which captures some of the structure and flow of the book.  

Soon we'll have an additional option to read through a book, moving at speed.  The idea remains indifferent to one's position on copyright, and of course there'll be nay-sayers who'll decry the already too-disposable approach to reading we have moved to.    I disagree and see it as an enhanced mode of reading, which treat concepts not individual books as the core nuggets you're seeking.  Indices of the world, unite, you have nothing to lose except your identity.