The Handbook was interesting in that it was one of the few sites that actually went with the XML + XSLT = XHTML route. Of course, nobody knows XSLT, and everyone hates XML, so it was dumped in favor of MediaWiki, which everyone still hates, but at least now mostly understands how to use. (although the same people that insisted we use XML+XSLT also insisted we use SMW, which is even worse... I gave up then, but I hear they're trying to undo SMW now.)
