Google Search Engine Sub-Results

[Jordan]

Just found this on Google Webmaster tools:

Sitelinks are additional links Google sometimes generates from site contents in order to help users navigate your site. Google generates these sitelinks periodically from your site's contents.
Because we generate sitelinks dynamically, this list can change from time to time.

From: How to Get Google Sitelinks » by Jonathan Hochman

The workings of many Google algorithms, including Sitelinks, are kept secret to discourage people from manipulating the rankings, but we can still look at examples and try to understand where Sitelinks come from. I've worked on a number of sites with Sitelinks, and these sites are similar in the following ways:

• Site ranks first for the keyword(s) that generate the Sitelinks listing
• Easily spiderable, structured navigation
• Fairly high natural search traffic
• High click through rates from the search results page
• Useful outbound links
• Inbound links from high quality sites
• Site age is several years or older

Here is some additional information and a good read: Google Sitelinks: The Ultimate FAQ