According to a post at SEO home, Google seems to have updated the sitelinks, the post reads "Noticed this morning that for one site I work on the google sitelinks have updated..
In this update google has picked a really odd page and also has applied text to the new a link to the page and not the link's alt tag itself.. And yes its a image only link..

One other thing about this link is the fact its all in lowercase.. I've not noticed sitelinks that are lower case before.. I'll keep a eye on this one! …"

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