Herbert-Jan van Dinther has been building and optimizing web sites for search engines for over 10 years. He is the author of several Joomla! SEO information web sites like http://www.pathos-seo.com and http://www.hummerbie.com and author of The Little Joomla SEO Book, which has helped numerous people in improving their web site. He also blogs about Joomla! and SEO, on blog.hummerbie.com which is recommend reading by Steve Burge from Alledia.com. He combines his knowledge of Open Source Content management systems like Joomla!, WordPress, and Drupal, and Search Engine Optimization into high ranking web sites on several topics.