Sure, making a map mashup (like the more than 2,200 map mashups we list) is fairly simple these days, but how about showing more complex geographic data? That's a bit tougher, but the sites below make it look easy. These three mashups provide environmental data, human-created place boundaries and a tool for robust geo-spatial analysis.
Flickr Shapefiles Demo: Demo of Flickr Shapefiles usage in Flash. Uses ModestMaps AS3 system for the web mapping together with Bing imagery. The source code is available in Wonderfl.net. APIs: Bing Maps, Flickr. More at our Flickr Shapefiles Demo profile.
California Environment Report: Cleanup Sites and Permitted Facilities: Interactive map, heatmaps, a geo-location mobile version, data feeds, and detail pages of every Cleanup Site and Permitted Facility from the CA Department of Toxic Substances Control Datasets. APIs: Bing Maps, Google Earth, Google Maps, Google Static Maps, Your Mapper API. More at our California Environment Report: Cleanup Sites and Permitted Facilities profile.
G4ng: From the site: The G4 is a powerful tool for everybody who wants to keep his/her geo-spatial data organized, analyzed and accessible from around the world with ability to share and collaborate with friends. APIs: Facebook, GeoNames, Google Ajax Search, Google Buzz, Google Chart, Google Custom Search, Google Directions, Google Earth, Google Gears Geolocation, Google Maps, Google Maps Data, Google Maps Elevation, Google OpenID, Google Static Maps, Google Translate, Google Visualization, MaxMind GeoIP, OpenLayers, OpenStreetMap, Panoramio, Twitter, Weather Channel. More at our G4ng profile.