Microsoft Silverlight 

Microsoft announced "Microsoft Silverlight", The Application Formerly Known As WPF/E. It's the Windows Presentation Foundation to be available everywhere and on all platforms, somewhat similar to what the Flash thingy stands for.

Quote:
Silverlight is a cross-browser, cross-platform plug-in for delivering the next generation of media experiences and rich interactive applications (RIAs) for the Web.

There is a website dedicated to this subject here: Microsoft Silverlight

If you want to discuss the product you can go to the MSDN Forums where they added some forums where you can add what you need to say or find a solution to issues you have with it.

http://forums.microsoft.com/MSDN/default.aspx?ForumGroupID=318&SiteID=1