Using Silverlight 2.0 clientaccesspolicy.xml vs. crossdomain.xml for Web-Service cross-domain access
To enable a Silverlight control to access a web service (like a WCF Service) in another domain, the service must explicitly allow cross-domain access. Doing so, a service states that the operations it exposes can safely be invoked by a Silverlight control, without potentially damaging consequences to the data the service stores. Silverlight s...