Hacker News Reader

Google calls it site links. See: http://www.google.com/support/webmasters/bin/answer.py?hl=en...

I had all of the pages in the root directory and it wasn't until I broke them out into there own directories did I get some links under the google.com search for officezilla.com. It makes a big difference, without those links your site listing is "just another listing" but with the additional links your site looks more important.

OK great, we have our sections broke out that way.

I suppose it is just a matter of traffic and pagerank?

For the site I work on, Google just does this without any sort of sitemap or anything from our end.

Google says that when it believes a user has performed a search that they believe is "navigational" they will serve site links for your site.

Ask YC: SEO/Google results