HTML is the ‘language’ that designers use to build websites. Valid HTML is code that validates to W3C guidelines, the organisation that develops good practices and standards for HTML.

Testing how your page looks in Internet Explorer is not sufficient.

“The foundation of accessible web design is valid HTML, as laid down by the W3C, which provides specific accessibility guidelines for designers. Producing good code takes time and expertise. Ensuring accessibility and usability without compromising creativity is also an effort. It’s best to plan and budget for accessibility from the outset.”

INTERNET WORKS , JAN 2003 Page 40

UK Government recommendations:

‘Use HTML as the default information format Browser-specific HTML or scripting methods should not be used in the website. The HTML page should validate against specified version of HTML’

Guidelines for UK Government websites
Illustrated handbook for Web management teams

We've recently updated our comments policy and increased the number of comments a visitor has to make to get seo friendly links in comment signatures to reward long term readers and make it a bit harder for dofollow spammers ;) - I told you dofollow spamming wasn't a long term strategy....