BTW, there are also a number of other differences - below is a quick list:
- Type of data: One of things we do is combine a number of different datasets (16+ M businesses, points of interest, intersections, etc...)
- Query type: You get very powerful expressiveness in the types of queries you do. You can literally make a request for 'Japanese restaurants that are within 1 mile and that are open at 10pm.'
- Media layers: For most entities, you can get media layers such as Twitter and Flickr. For example, you can get tweets around the mission (http://api.geoapi.com/v1/e/mission-san-francisco-ca/view/twi...). We're adding more layers as we go.
- UserView: Each developer gets a private namespace into which they can add information and run geo queries on it. Basically, you can annotate the world with close to zero effort.