g1smd - 8:15 pm on May 21, 2006 (gmt 0)

I recently thought that all of the old pre-2005 June Supplemental Results had been cleaned up, but I now see that when I make some other keyword searches that some of the URLs that I thought were gone, are still actually there and still show old content in the snippet.

I see words in the snippet that are old content that are no longer on the page, but when I search for those words that page is no longer returned as a match. That is why I thought the page had gone from the index as a Supplemental Result.

I believed that the page now only appears for current content as a normal result. It appears that some of the old Supplemental data is still there and can sometimes still appear in search results.

One problem with my report: I am not sure if the Supplemental data is dated before or after the 2005 June cutoff that I have noted elsewhere, simply because these results are (so far) all for PDF files - and PDF files do not show a cache date for Google's HTML version of the page.

It may be that I am mistaken and that these are recent Supplemental Results, along with the many more that I have seen dated 2005 July and after.

If, however, they are dated 2005 June or earlier, then Google hasn't actually fully cleaned these results: it will prove that remnants still lurk.

Further work with archive.org will be needed for comparison, to see what is actually happening here; but so far archive.org has not got a suitably dated copy of the files that I am looking at.