Joost de Valk is a famous SEO and web design specialist, and the founder of Yoast, a useful search marketing plugin to help websites deal with on-site SEO related problems, including meta information, sitemaps, and anlytics.
He is based in Wijchen, near Nijmegen which is also the main location for the Yoast offices.
You can find him on Google plus: Joost de Valk
And Facebook.
