The other day, I reported on Search Engine Land that Google seems to be showing fewer sitelinks in the search snippets. Not that Google is showing sitelinks less often in general, but rather that I cannot find any sitelinks that are made up of 6 links and I am more often finding 2 or 4 sitelinks in a snippet....
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Google Displaying Less Sitelinks For The Past Couple Months
seroundtable.com