The NeoSmart Files - The Need for Creating Tag Standards:

"Basically, it’s too late for a tagging standard that will be used unanimously throughout the web. A truly semantic web most certainly won’t ever exist because of the reluctance to change and the unwillingness to compromise and accept defeat. A semantic web requires objective analysis of methods and data, culminating in honestly evaluated options, and immediate acceptance of the outcome. But that’s never going to happen."