list of links are sitelinks

Search engine websites like Google, MSN are showing list of links in their search results page at the first position of first page.
The links that sometimes are seen as a set of links under the main site are Sitelinks. These Sitelinks are sometimes shown by search engines as a search results for site. The Sitelinks help users to see list of links in that site.

The figure above shows the sitelinks of, the popular photo collection(sports and events) site from Netherlands.

Google generated sitelinks are automated and the site should be well structured to meet the Google sitelinks algorithm containing at least of three sitelinks so as to appear on search results.