Open Weather Map is a service that provides weather information with interactive graphics. The Open Weather Map .NET library by Joan Caron is an asynchronous project that interacts with the API. In the official site, users can review the API features that include current weather data, historical data, weather station network, weather forecast, map layers, and data from weather stations. Temperature shows Celsius degrees.
UMap, provided by AFComponents, is a Flash ActionScript mapping API that allows developers to create custom map mashups with interactive data layers. Umap includes a variety of features including support for Flash/Flex versions, custom map tiles integration, KML support, and other capabilities (see our UMap API Profile for more).
Perhaps that Bing-Yahoo search deal is paying off. Even though Maps and Flickr aren't known to be part of the deal, Microsoft has connected its Bing Maps to the Flickr API in a unique way. It overlays geotagged Creative Commons photos over its current StreetSide imagery, as shown in the video embedded below.