With Lemonade Stand, users can search for things to buy in a location-based manner, or add their own listings of things they wish to sell. The application is currently available as a client for Android, with a possible Windows Phone 7 version on the way soon as well, from a 3rd party developer that released an early version. Its Lemonade Stand API allows other developers to either code their own clients or use it in mashups.
Better hurry--you have passengers to pick up and only a handful of seconds to get them to their destination. TaxiCity takes place on the actual streets of Vancouver. The game was created by students using open data and the Bing Maps API.
You'd hardly notice the difference unless you were looking for it. MapQuest's latest API is a reinvention of its MapQuest API to display maps. So, what's new? Following the company's recent pattern, MapQuest Open API is based on OpenStreetMaps, the crowd-sourced map favored by many modern geo-hackers.