W3C validation is a measure of a site’s usability, a representative said, and this method of validation checks the site for HTML errors and how the site appears in different browsers. A site with no errors is a site that is more user-accessible, providing a better surfing experience.
The Top 10 Best Valid Websites list is comprised of several Internet giants like MSN and CraigsList.
“There simply isn't any question in our mind about serving the consumer in the best way possible," said Suzann Knudsen, head of marketing for Pornotube. "Why on earth would you create a site that a user couldn't access?”
She also cites that the Internet juggernaut is set to undergo several more improvements in the very near future to make it faster and stronger than it is now to optimize the user experience even further.