@danielmcclure on Twitter: "RT @yoast: New on Yoast: W3C Validation & SEO: should you care? http://bit.ly/bVWsvT"

Last Updated: June 13, 2010

RT @yoast: New on Yoast: W3C Validation & SEO: should you care? http://bit.ly/bVWsvT

https://twitter.com/danielmcclure/status/16095739533