today

Free download URL given here. Microsoft takes on Adobe Flash, which is a cross-browser, cross-platform plug-in that offers media services through the Web. Microsoft says the possibilities are endless with Silverlight 1.0, whether it's booking tickets simply by connecting destinations on an online map, or setting-off on a seamless virtual tour of myriad destinations. Microsoft said it is working with Novell to deliver Silverlight for Linux, which will be called 'Moonlight'. Recently, Microsoft launched a complete product suite -- Expression Studio -- for the designer community. In combination, Silverlight 1.0, Expression Studio, and Visual Studio 08 promise easy and seamless creation of rich user experiences across platforms.

IMO: It might be useful, downloads free anyway.