Radical Supp Index Facelift

[Halfdeck]

Googleguy announced earlier today about a radical supplemental index facelift:

Okay, I believe most/all U.S. users should see radically fresher supplemental results now. The earliest page I saw was from Feb 2006, and most of the ones that I looked at averaged in the ~2 month old range. -- Googleguy, 8/8/2006

I'm not seeing any changes so far on "google.com", but results on 72.14.207.99 look promising, to say the least.

[spacemanspiff]

What does Google do with this supplemental index? Is it an indication of things to come? Like this

http://www.mcdar.net/dance/index.php

[Halfdeck]

What does Google do with this supplemental index?

Google pulls results from there for long tail queries when it doesn't find enough results in the main index.