Last week, I blogged about Overcoming Cross-Domain Issues in Silverlight which recommended the use of a proxy service for making cross-domain calls. I'll be writing more about the security considerations of using that method in the coming days. For now, here's a flow diagram I created to better understand what the WebClient class in Silverlight is doing when making cross-domain calls. If you see any problems with my interpretation, I invite corrections by commenting on this blog post.