randle - 2:06 pm on Aug 11, 2011 (gmt 0)
User metrics is in fact a key factor.
What "facts" do you have to prove this?
I'm not talking about sites that were negatively effected by Panda; if you were hurt by Panda, change is most likely all that will improve the situation (as opposed to doing nothing).
However, statements like the above imply that if you improve the "quality" of your site, and subsequently the "user metrics" data Google collects, your rankings will improve.
Has anyone been able to prove, say for example, that lowering a sites bounce rate has improved it's rankings?