If you check the backlinks to your new website or blog and the first result on Google states that there are 100+ results, then when you click the next page of results the figure comes down to 35, you will also see the phrase: “In order to show you the most relevant results, we have omitted some entries very similar to the 35 already displayed.If you like, you can repeat the search with the omitted results included.”
This means that 65 of your pages have been dropped into the supplemental index. If you care about getting to the top of the search engine rankings then you will not want any of your web pages to show up in the supplemental index. Why do pages appear in the supplemental results and which ones are they? According to Google it is because the pages have a low page rank: well that is not correct because high PR sites have also gone into the supplemental section on occasion. The real cause for the drop is that the pages shown contain duplicate content, which is known as ‘Google Hell’ for webmasters or bloggers who take search engine optimization seriously. The supplemental results are those which are indented away from the left of the page when you view the list on a Google search. It is not a disaster to find some of your pages are showing as supplemental but if the figure is more than half the total (as shown in the example), and those pages are important ones, then that site is going to have problems and you need to fix them. If on the other hand they are short blog posts or results from minor directory listings then it is probably not worth spending the time trying to correct them. You would be better advised to research some new topics for your website or blog and write some fresh original content instead.