WW_Watcher - 5:18 pm on Mar 25, 2007 (gmt 0)

IMHO, "In My Humble Opinion"

G will start looking at all their data acquired from the G Desktop & Toolbar stats to determine the quality of a "Site", and place some sort of unknown, unseen score, like PR, but based on how often users bounce back off of it, bookmark it, or time spend cruising site, or number of pages surfed, or some combination of all of the above. This will then be used somehow in the Algo to boost the trust rank, floating the quality to the top, & the crap that no-one wants to see to the bottom.

Pure Conjecture at this point, but you asked for "Brainstorm"

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WW_Watcher

Edited to Add.
This would be more of a quality score created by surfers, than by inbound links that have been manipulated by SEO.

[edited by: WW_Watcher at 5:24 pm (utc) on Mar. 25, 2007]