Does anybody know where Siri gets its local search results from? The independent version of the app has been pulled from the App Store, and the only "answers" I can find to my question online are low quality. If they somehow manage to produce good results, they'll stand with Google Places as one of only two generally reliable local search resources.

If somebody has some insight on this, and they'd be willing to discuss it in greater detail or at greater length than would be suitable in an HN post, please contact me (see my profile).