These are stale news items. There's some chance they are fake. And I have no clue how to interpret them. But they certainly are interesting...
From Techcrunch back in October:
Google assigns dollar value to search results
From SEL back in April:
Google Showing Ranking Scores On AdWords?
From Search Engine Journal, same event:
Google Leaks Quality Score Variables (Pscore, mCPC and thresh) in Search Results