burcot - 4:27 pm on Mar 9, 2011 (gmt 0)
luke175 posted a link in the AdWord forum. The page is written by a guy that was banned from AdWords and contains information directly from Google about their perception of page quality.
He posted the explanation from a google employee listing specific percentages for ad to content ratio etc. I know organic pages won't be weighted exactly the same but it is Well worth a read... [andrewhansen.name ]