bom artigo: a diferença entre Flash e Silverlight

leiam, vale muito a pena.   imparcial, histórico e bastante justo.   eis um trecho:

you see that in the current universe, Flash and Silverlight seem intended for two different things. I'd never put Silverlight on the front page of a marketing site because the penetration rate. But on the other hand, you bet I'm using it today to handle file uploading deeper in a site. Then I added a simple out-of-browser app for my most passionate audience, and guess what my Silverlight 3 penetration rate is now? 20%! Add another 20% for version 2.

a íntegra está aqui: Silverlight vs. Flash and other pundit fodder - Jeff's Junk