According to cNet, Microsoft has paid Opera $12.75 million in damages rather than face a law suit.
The complaint stems from 2003 versions of MSN, when the company deliberately created stylesheets that caused the site to render improperly in Opera. However, then, as well as today, MSN fails the W3C validator.
Most of today’s issues are URL-related, however, showing a definite improvement in code quality, although the home page still does not contain a doctype.
The Safari stylesheet fails validation as well.