Quova's is a geolocation service, went free last November. The company has revamped its developer portal and added a few awesome new features to the Quova API. The company also added JSON as a response format, as so many other APIs have lately. Unlike the APIs ditching XML, Quova is keeping the XML format and expanding developer options. Also, the company added a developer forum and app gallery to its portal, to encourage community around its API.
After continued developer requests, Google has added marker clustering to Google Maps SDK for iOS Utility Library. The feature allows users to populate maps with a large number of markers while keeping the map clean and readable. As zoom levels adjust, markers aggregate and slit out accordingly.