REDMOND, WA — Microsoft Silverlight, the new Web multimedia platform, is "one of the fastest Web plug-in's," with one third of the world's PC's having the program installed, said Chris Swenson, Senior Strategy Officer in this interview with Beet.TV at Microsoft headquarters.

He say that there are 400,000 developers and designers using Silverlight tools. 

Update: Silverlight goes open source with Novell's Moonlight 2.  Here's the take by Ina Fried at CNET

Andy Plesser, Managing Editor