Long thought over the title to avoid ambiguity. But I decided that otherwise it’s somehow too clumsy :) Of course, developing with Silverlight is possible for money. And with this you can make a good business as an independent developer or design agency. The news is different - now you can use completely free tools for Silverlight development. Starting with the version of Silverlight 2 RC0, which was released the day before, support for Visual Studio Web Developer Express 2008 SP1 has appeared ! Silverlight itself and the SDK to it were free initially. By the way, Microsoft has a separate section of the site dedicated to free development tools - www.microsoft.com/express/ru