Following your comments and trying to trail things out, the only thing I can find is a reference to AltaVista LiveTopics.
https://dannysullivan.com/why-search-sucks-you-wont-fix-it-t...
I suspect what I used was that "GRAPH" button in the AltaVista Refine picture.
We might want to archive that image. It seems like the only evidence that this stuff ever existed.
https://www.researchgate.net/figure/Alta-Vista-LiveTopic-Gra...
which has some different coverage.
I did try to archive the blog you linked but unfortunately the owner is blocking it with robots.txt
User-agent: ia_archiver Disallow: /
reply
I suspect it was a later incarnation that I used.
Following your comments and trying to trail things out, the only thing I can find is a reference to AltaVista LiveTopics.
https://dannysullivan.com/why-search-sucks-you-wont-fix-it-t...
I suspect what I used was that "GRAPH" button in the AltaVista Refine picture.
We might want to archive that image. It seems like the only evidence that this stuff ever existed.