---- Very good proof google is using behavior data for rankings
indyank - 5:37 am on Sep 11, 2011 (gmt 0)
Can't speak for "users" but I rarely spend more then tens of seconds in any page.
so you are also contributing towards the success of panda :)
coming back to that article, I strongly disagree with its claim that google analytics is being used.
But feedburner might have a small role to play...as it can give them signals whether the site is posting stuff relevant and useful for its loyal subscriber base...I do say that they would have "profiled" those subscribers, if they happen to use google reader or gmail.