Muchas gracias Daniel...
El vínculo que me has pasado es bastante interesante. No obstante la respuesta final se encuentra en el mismo google (en el último enlace que enviaste). EL problema que tenía es no sabía cómo se llamaba exactamente este mecanismo autómata (google sitelink).
De cualquier manera, comparto la información encontrada aunque es un tanto escasa:
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How do you compile the list of links shown below some search results?
The links shown below some sites in our search results, called Sitelinks, are meant to help users navigate your site. Our systems analyze the link structure of your site to find shortcuts that will save users time and allow them to quickly find the information they're looking for.
We only show Sitelinks for results when we think they'll be useful to the user. If the structure of your site doesn't allow our algorithms to find good Sitelinks, or we don't think that the Sitelinks for your site are relevant for the user's query, we won't show them.
At the moment, Sitelinks are completely automated. We're always working to improve our Sitelinks algorithms, and we may incorporate webmaster input in the future.
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Más información
aquí.
Saludos y gracias por los vínculos.
POST Answered!