> There were four test URLs in total, two of which tested for how search engines deal with unique content
...
> There is one unusual thing, however – a site: search brings up the lowercase URL, but the uppercase URL is filtered out for being too similar to the other displayed URLs and isn’t shown unless the ‘repeat the search with the omitted results included’ link is clicked.
Maybe the content isn't unique enough so Google's duplicate detection algorithm marks them as duplicate?
The two examples contain similar keywords and don't seem to have any outgoing links. A human would probably flag them as spun articles so I wouldn't be surprised if Google did the same.
Maybe the results would be different if each link was a unique high quality article instead.
...
> There is one unusual thing, however – a site: search brings up the lowercase URL, but the uppercase URL is filtered out for being too similar to the other displayed URLs and isn’t shown unless the ‘repeat the search with the omitted results included’ link is clicked.
Maybe the content isn't unique enough so Google's duplicate detection algorithm marks them as duplicate?
The two examples contain similar keywords and don't seem to have any outgoing links. A human would probably flag them as spun articles so I wouldn't be surprised if Google did the same.
Maybe the results would be different if each link was a unique high quality article instead.