I am great fan of Smashing Magazine articles. This comic strip makes it really easy to get the differences between XHTML, XHTML2 and HTML5! There has been a lot of confusion and various debates about the “proper” markup language for modern and future web-development. With XHTML 1.0, XHTML 2, HTML 4, HTML 5 and XHTML 5 we have so many languages that it’s really getting hard to keep track! This post is worth reading if you want to clear up the confusion about what markup language you can use for your web-sites.
Read full details: Misunderstanding Markup: XHTML 2/HTML 5 Comic Strip