Great article on the future of XHTML and HTML
freixas - April 12, 2007 - 01:17
Drupal, along with others, has made a decision to go with XHTML as the path to the future. I'm sure a lot of Drupal developers are quite aware of recent developments regarding HTML 5. For the rest of us, I found a great introduction to the goals of HTML 5, contrasting it with XHTML 2 as a future path. Until I read this article, I didn't fully appreciate some of the issues involved.
See www.digital-web.com/articles/html5_xhtml2_and_the_future_of_the_web/
I'm not advocating any changes to Drupal. At some point in the future, a re-appraisal of HTML vs. XHTML might be appropriate.

Very unique experience ahead
I saw this a while back. It does provide for a unique experience. Both have very good pros and cons. (Well I guess not-so-good-cons.) I'm personally going to wait until I learn a little more before sticking to one side or the other.
Very useful article
thanks a lot !
Best regards
Article reference: HTML 5 : We don't need no XHTML
Here's another article talking about future HTML/XHTML standards: http://www.webforefront.com/archives/2007/07/html_5.html
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Tony Freixas