Just as you have first class compartment and second class compartment in trains, you have first class pages and supplemental class pages in Google. And, just as you would feel comfortable in First class compartment, your company should have better position if it is listed in main result pages of Google.
Google Supplemental Results are same as second class compartments!
This is not the place where you would like your site to be. These are the pages that Google has indexed but feels, for some reasons that they are not qualified for main index. Once you are in supplemental, nobody can find you unless they are looking for something unusual and of course, you would not want your visitors to find you with an unusual key term.
How would you know if your pages are supplemental?
Type site:www.yourdomain.com in Google search and keep checking the pages. At some point, you would see your pages branded as supplemental. All the pages after that are supplemental. If they are a few, it is not a big problem but if there are dozens of them, your site is in trouble.
Why some of the pages go supplemental?
There are some identifiable reasons why pages get tagged as supplemental. Here is the list:
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Mirror pages
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Similar titles and description meta tags
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Long dynamic urls (too many parameters)
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Not enough indexable content
The most important reason can be a lack of backlinks. If there are no incoming backlinks to a page, it is likely to slip into supplemental index.
If the above things are in right place, you might not face the brunt of supplemental index from Google.
Filed under: SEO
