Earlier updates brought about dramatic changes because they were conducted monthly through the Google Dance, which bulked up the factors that needed to be addressed by the search engine. In July 2003, Fritz marked the end of this type of refresh and the team opted to do incremental updates daily. With this, they no longer need to take out a data center from the rotation to load an entirely new index to it.
With the development of an additional or supplemental index, Google’s primary objective may be to improve its performance even more. It allowed them to crawl through and index more documents without neglecting the quality and performance that end users receive.
The supplemental index is a secondary directory of pages that Google scours through in case it fails to find relevant matches within its primary web index. Unusual or obscure search terms may yield results from this index which have the tag “supplemental results” next to the URL.
There were a lot of concerns over pages ending up in the supplemental index since it would mean that Google doesn’t consider the content relevant or significant enough for the primary index. As far as user experience is concerned, it also doesn’t add credibility to your page if it’s in the second index which can harm the overall site’s reputation.
To stay in the main index at the time, you would have needed:
Google scrapped the supplemental index concept, and it hasn’t been reintegrated since. In today’s SEO-driven digital world, though, you still need to ensure that you provide informative posts in a uniquely and compellingly way to attract your target audience and keep them coming back for more content from your website.
Here are some tips to help you write compelling content and increase conversions: