Recently I've had some discussions with some folks inside MS with this subject. So, I decided to write something around.

I have to say... if you run the W3 Validator (http://validator.w3.org/) against a known SharePoint site (I tried http://www.wssdemo.com/default.aspx) and here's the output.

image

The issue is that more and more customers (especially government) is trying to adhere to standards, if we weren't able to overcome this problem SharePoint would be put out of the business for these customers.

But... we are, the SharePoint team posted some info in their blog which talks about the Accesibility Kit for SharePoint (AKS) which in his 2nd release includes an example of an XHTML 1.0 Strict page hosted on SharePoint.

Regards

- Ricalo