>If your documents are html4 compliant or xhtml1 compliant they are already xml compliant.

Well, they are probably not because I do not code HTML in XML. Unless I am missing something...

>All browsers have been html5 compliant for a while, including mobile, even older blackberrys.

Do you know why we do not see that much Web sites benefiting of those drag & drop, graphics and such? Is it because this has not been totally approved at the corporate level, not enough experience or such?

>My DoodleMe app sends a url with x and y coordinates and that render on the client using the html5 canvas and it has worked absolutely everywhere.

Do you have a like for that, assuming it is public, so I can have an overview of what it does?