Un Excelente WebPart se publico recientemente en Codeplex, se trata de un Visualizador de Mapas con total conexión a las listas de SharePoint
SMIL provides a Map Web Part, a custom data field, and exposing geo-enabled sharepoint lists as GeoRss. We also extract Lat/Lon from geo-tagged images that are uploaded into a image library.
SMIL is a open source project with the aim to geo-enable SharePoint. The project using Bing Maps with DeepEarth Toolkit as map client. Currently you can geo-enable any list-item in SharePoint, get jpeg photos tagged with coordinates shown in the maps.
The project provides a custom data field where you can give any SharePoint list item, document etc a location with a pushpin. A listener, as a feature, when you upload your geo-tagged photos into a SharePoint image library. We also provide a main map client, as a Web Part, with a layerpanel, you can view and filter your SharePoint geo-enabled stuff. You can either filter your content via views, that is SharePoint views from SharePoint lists, in the layerpanel or filter information by connecting to other Web Parts.