I'd like to use JsonML for all the markup, and then render that browser side -- then I could build the whole website as one giant data structure in something like node.js. I'd be so happy to never write another line of html in my life.
And sorry for eating up all this bandwidth on your forum -- for some reason, all these people don't want to migrate over to my mailing list. 
I've become a bit of a JSON fan - it's a horrible abomination of an abandoned orphan of a disturbed markup language, but it is extremely easy to generate in PHP thanks to json_encode() and json_decode().
And don't worry about the bandwidth. :-)
