suggy - 4:58 pm on May 3, 2011 (gmt 0)
Google knows two things: bounce and time to adsense click (TTAC)!
I think going forward, bounce, blacklisting, TTAC will become more important.
This is the best feedback to google on whether offering a page to users is likely to be worthwhile or not. This may ultimately sink pointless/ waste of click sites. In the future, it won't be as simple as getting the SERP position; you'll need to keep earning your place there too!