lucy24 - 9:05 pm on Mar 7, 2013 (gmt 0)
or even quotes in most cases
Tell it to the validator :P In many, many areas it insists on things that are not part of the HTML 4 standard at all (capitalization is an obvious one). But they're good habits all the same.
Besides, nothing wrong with backward compatibility. Looking at recent logs I think I can now safely stop worrying about MSIE 6 for my specific audience-- but that's only within the past year. And I still have to budget for satellite-internet load times.