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I believe he is talking about Breadcrumbs - not sitelinks. To get your breadcrumb rich snippets displaying in the SERPs they must use the appropriate micro data markup. Some examples on how to implement this can be found here: http://builtvisible.com/micro-data-schema-org-guide-generating-rich-snippets/#breadcrumb And here: https://support.google.com/webmasters/answer/185417?hl=en Until recently, these breadcrumb links were clickable from the SERPs but like a lot of things in SEO, this was exploited to do things that it wasn't intended to do so Google removed this feature. You can read about clickable breadcrumb links being removed and why, here : https://www.seroundtable.com/google-breadcrumb-snippets-drop-hyperlink-19595.html