A presentation on Silverlight in April 2008 touched on why businesses have expressed a need in USER EXPERIENCE in the past two years and in the years moving forward.

http://www.infoq.com/presentations/m...t-presentation

RIA development tools such as Silverlight, Flash, Flex, and possibly JavaFX and the people who are able to develop for them are becoming increasingly more in demand.

Same as Nesting function post but attached example loads and external swf then calls a root function from the loaded swf