XML is so
<?xml version="1.0" ?>
XML is so cool. Im finally starting to get it. and believe me it look a long time. Its like every xml file is an object bag. you just throw whatever you like in there. its very flexable and very readable. it brings an OO programming mindset down to something very easy to use.
HTTP is being used to throw these objects around, and HTML files are being used as an easily accessable place to keep objects. Both are a little wanky but it works. For instance I added a FOAF description to my home page.
XHTML will take the non-xml-isms out of HTML, which is a good thing.