I haven’t been able to see it when running Google searches today but a post in the SEW Forums offers a screen cap of a Google user interface experiment.
What You’ll See
Located directly below the url in a search results snippet, you’ll notice five additional links to other parts of that specific web site.
Confirmation
GoogleGuy has confirmed that this is just a Google UI experiment.
He writes:
We’re always playing with new ways of presenting search results. Sometimes folks don’t notice UI experiments, and sometimes they do.
Postscript: Barry points out another UI experiment from Google that has been confirmed by GoogleGuy.