We want to be able to pass paramaeters from ASP.NET pages to Silverlight 2 application. Here is one scenerios why this would be useful.
When consuming the web service in development, the web service will point to localhost whereas in QA and UAT web service url will change to qa.myserver.com and uat.SomeServer.com. We will store web service URL in appSettings of web.config allow avoiding hardcoded values in Silverlight 2 application.