Supplemental result on google gone

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I just noticed that Google no longer tells you which results are
supplemental search result.  My theory was that the supplmental search
results were a result of websites gathered from sites that people
visited with the google toolbar but weren't gathered by normal
spidering.  From what I've been able to tell, google still
differentiates between the two sets of databases but it just doesn't
tell you which results are supplemental.

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