HTML structure matters for SEO, but not in the ways most might think. Read on to uncover the real role of HTML for SEO.

Columnist Ryan Shelley explains why a good site structure can be highly beneficial for your search engine optimization efforts -- and your users.

How To Optimize Website Architecture For SEO Organize your website in a way that allows your users (and search engine robots) to get easy access to your content.

Pioneering studies of social networks and the Web's structure lead to a prestigious prize.