Nothing to Stress Over (Score 1)

Pretty much my first priority is to make the websites display correctly in the most popular browsers. It just isin't worth my time to worry about how it displays in the less popular browsers. And then I put the code through the W3C Validator. Mostly for error checking and such. I just consider it a bonus if it validates correctly while displaying correctly. If for any reason I have invalidate some code to make it work in one of the "popular" browsers, then by all means I will. I just don't think enough people care about whether your website validates or not to even worry about it.