There are best practices you can follow, however, to improve the quality of your sitelinks.A site I run has 6 sitelinks in Google search results.However if you happen to be Nike, dominance of a SERP using sitelinks on your own ecommerce site is particularly handy, as of course Nike products can be purchased from many different retailers.
I then ensured Google re-indexed the site via Webmaster Tools.Google sitelinks are a deluxe listing format that presents a main search result, followed by two or more indented Sitelink results. On a Google search for the keyword “Sekonic” beneath the main search result we see links to various areas of the Sekonic web site.Most web site operators view Sitelinks as a reputation enhancer, and also a way to control a greater area of the search results page. This would help a searcher in two ways: they can get a better understanding of what the site is about before they visit, and they can take a shortcut from Google to the page that interests them, rather than arriving at the home page and then having to navigate.Using site:to check the most recently cached version of each page, I can also see that when listed individually, the links to these pages have a description in Google's results corresponding to the updated meta description.However, in the sitelinks it is still the same text description as was there before I updated the meta tags. As you allude to, the way the sitelinks are derived is what I can't find any specific information on.