Ever since SMX, it seemed inevitable that Google would drop the Supplemental Index moniker – Matt Cutts hinted that the tag should go away.
Today we learn that Google is indeed dropping the “Supplemental Results” tag from those search results that don’t quite have enough juice to make the main Google index. The reason is that Google’s supplemental index is a lot more efficient than it used to be and Google feels that it’s almost as good as the main index.
The distinction between the main and the supplemental index is therefore continuing to narrow. Given all the progress that we’ve been able to make so far, and thinking ahead to future improvements, we’ve decided to stop labeling these URLs as “Supplemental Results.”
But, did the Supplemental Index go away? Nope!
We’re also working towards showing more Supplemental Results by ensuring that every query is able to search the supplemental index, and expect to roll this out over the course of the summer…Of course, you will continue to benefit from Google’s supplemental index being deeper and fresher.
So there you go. Your pages are still in the Supplemental Index, now you just don’t know which ones.