From W3C Wiki
I think this article is great, but it is a bit long and unwieldy. It could perhaps do with breaking up into a couple of articles.
About the author
Tom Hughes-Croucher has been working in the Internet industry since he has been working. He has contributed to a number of standards on Web technology for standards bodies such as the World Wide Web Consortium (W3C) and the British Standards Institute (BSI). More recently he worked in the Digital Music business providing digital music solutions to well known UK brands like Tesco, Three telecom and Channel 4.
Tom now works for Yahoo! as a technical evangelist. Specialising in front-end web technology and RESTful web services he likes to promote best practice wherever he can. Before that he looked after the European Frontpages serving many millions of European visitors a month—he just doesn’t find scaling scary any more.