I think we are witnessing a major breakthrough today, as Silverlight is becoming a true cross-platform. Does it matter? Yes, it does. We will just develop our Silverlight application once, it will run anywhere whether it is on the web, mobile or desktop; whether the operating system is Windows, Mac, Linux, or Symbian.

For Linux users, you can download Moonlight plug-in for your browser at http://www.go-mono.com/moonlight/