Browsers for PCs? I believe they'll support these things in addition to their own proprietary extensions forever. I belive that people would go for standards like the XHTML ones if in fact they believe that they require their site to have the capability to be viewed from other devices (for which XML standards are importante aren't they?)

But if someone doesn't give a flying rat's ass about non PC users, what do standards matter to him as long as the site looks OK in IE 6?