Here we go – Matt Cutts explains why W3C validation should be used when developing any site (if at all possible, as sometimes it is not, depending on the browser) and also why Google doesn’t look at site/page validation when determining ranking.
We still believe that clean, valid and accessible code will help your site do better in regards to SEO, plus assist with browser compatibility and load time – regardless if Google factors it into their ranking algorithm or not. It’s just simple site development best practices…
