I suspect some if the methods discussed here go well beyond classification of site links, and may indicate how overall scoring of links occurs. This also goes to show just how advanced the rendering abilities of Google may be.
Great work from (as usual), and very much worth reading if you’re an SEO.
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Google has a new granted patent and a newly published patent application on the sitelinks that they might show in search results for a site. Are sitelinks showing for your site, and if not, why not?
How Google May Choose Sitelinks in Search Results Based upon Visual or Functional Significance – SEO by the Sea
A new Google Granted Patent and Patent Application describe how search results site links might be generated for a site, and what factors Google may look at when deciding.