GeoRSS is a great way to share geographic information that updates all the time, sending simple geography (points, lines and polygons to a consumer. GeoRSS is RSS with a collection of points, as flexible as RSS with the advantage of providing location to your information. A great tool that I personally...

After Richie released the Map Viewer Silverlight control I thought to provide the control with an SDK.  Completely write an SDK in Silverlight for queries and tasks would take a long time. However ArcGIS 9.3 comes out with the Rest Api and Silverlight can talk to Javascript without any problems...

ESRI released a sample of a complete .NET map viewer on their code gallery. Info below Description from the Code Gallery The Example .NET Viewer is a web mapping application build on the 9.3 SP1 ArcGIS Server .NET Application Developer Framework. The Example .NET Viewer includes sample source code for...