If a user can view the HTML the way they need to on IE (hypothetically), but the HTML isn't valid, is it still On-Topic?
How have you decided this in past? Should we continue to use the same set of specifications to define off-topic HTML?
HTML that is viewable on IE, but not valid, may not display correctly on Chrome, Firefox, Safari, Opera, etc.
So, is valid or viewable the standard of measure for HTML?