According to a new post on the Google Webmaster Central blog, the supplemental index is no longer, well, supplemental. Google has long had a two-tiered index and webmasters have generally feared the second, supplemental tier. A Forbes article earlier this year called it “Google Hell“, as historically, those pages weren’t crawled as often as those in the main index, weren’t returned in search results unless the main index didn’t contain enough matching pages, and were labeled “supplemental,” which implied they were inferior to the other results.

In July, Google removed the supplemental label, saying that they had overhauled the supplemental crawling and index system and therefore the label was no longer needed. Now, they say that the next set of improvements are complete and that they now search both the main and supplemental index for all queries, not just the long tail queries that the main index can’t satisfy.

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