Through a NYTimes article I just became aware of CitySearch's set of APIs for their CityGrid system. I've just now signed up and printed out the API documentation and was wondering if anyone has started on or developed a module(s) for this.
Apparently they've given up the battle for eyeballs and decided to share their database. They provide three APIs, one for Search, one for Profiles and one for Reviews. Publishers that use these may get paid through revenue sharing. It's still a bit unclear to me how the payment schedule works.
Anyway, I thought it worth looking into.