Hyatt and the Safarians look like they’re willing to try a sensible semi-pseudo-namespaced approach [via ongoing · How To Grow HTML]
Apple writes a little program to enable development of widgets. They thought 'we could create yet another mark-up language', or, 'we could use html and add some bits, hey everyone will know this is just for use in this application'.
Oh no, no, no. World + dog descends - how dare you polute html, how dare you play with a standard, how dare you.... oh gawd it goes on and on.
Just to show how stupid and ignorant I am, everyone would be happy if this stuff had been discussed at a standards group or even just a group (like WHAT). Weird. Even weirder, putting this:
<!DOCTYPE html SYSTEM "http://www.whatwg.org/dtd/2004/whatml-10.dtd">
At the top of the file would have made it all OK because then Eric would have known that he wasn't looking at real html.
These people would seriously freak-out if they ever looked at zeepe. Or perhaps they wouldn't, all the 'extensions' are in the zeepe: namespace.
On a different tack, I note that Apple has added <canvas> (or <apple:canvas>). This is an idea I've toyed with for quite a while but never came up with the application idea that absolutely demanded it.