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Once the feed gets inside Google the fun is just beginning. Most commentators have been underwhelmed by Google Base because they don‘t see the big deal of Google Base entires showing up as part of free text search. What these commentators miss, is that Google isn‘t gathering all this structured data just so they can regurgitate it piece-meal via unstructured queries, they are gathering all this data so that they can build the world‘s largest XML database. With the database assembled, Google will be able to deliver a rich, structured experience that, as Michael Parekh sagely points out, is similar to what directory structures do, however because Google Base will in fact be a giant XML database it will be far more powerful than a structured directory. Not only will Google Base users be able to browse similar listings in a structured fashion, but they will also ultimately be able to do highly detailed, highly accurate queries.In addition, it should not be lost on people that once Google assimilates all of these disparate feeds, it can combine them and then republish them in whatever fashion it wishes. Google Base will thus become the automated engine behind a whole range of other Google extensions (GoogleBay, GoogleJobs, GoogleDate) and it will also enable individual users to subscribe to a wide range of highly specific and highly customized meta-feeds. "Featured listings" will likely replace or complement AdWords in this implementation, but the click-though model will remain.