Isn't fanbaby already identified as a nay-sayer on MS in general? What's that for?
I agree with those who speak in support of XAML. Obviously those who spoke beforehand do not use it and have not gotten their expertise around it - or they'd like using it. Perhaps they have only ever written for the web, something has them half-in, half-out so there is nothing compelling use of XAML like desktop apps, real LOB enterprise apps.
Browsers suck. Whoever thought putting a LOB app there is still very wrong, imho. Deployment lightweights, the lot.
Silverlight is the only sane way to attempt to put a serious LOB on the web. Got to have state. XAML beats HTML/CSS/JS on all counts.