Last summer it was discovered that Google was testing breadcrumbs in search results (breadcrumbs being the hierarchical display commonly used in site navigation. For example: Home Page>Product Page>Product A Page). Then in mid-November, Google announced that it was rolling out the use of breadcrumbs in search results on a global basis. What this means for webmasters is that if you can get your breadcrumbs into Google's results, you essentially have more links on the results page. You have a separate link for each page in the breadcrumb trail.