rekitty - 5:40 pm on Apr 12, 2007 (gmt 0)

Yes, links from supplemental pages do not carry as much weight as links from non-supplemental pages. But - big but - the reason is not that the pages are supplemental, it's that the pages are supplemental because they are naturally lower PR pages.

jimbeetle, what if Google decided that supplemental pages no longer pass any link weight, rather than passing the little PR they do have? That's the fundamental change I believe happened.

I think Google installed a new knob as part of BD. That knob decides what percentage of link weight gets passed by supplemental pages. If that coefficient isn't currently zero it's darn near it from what I see... all wild speculation, of course.

This has caused Carl's Tsunami for months now. The domino effect has resulted in a fundamental re-distribution of link popularity across the web. Call it the slow boiling, domino effect tsunami update. That will stick :-)