Google Using Behavior in Rankings?

Interesting stuff. This SEOMoz post goes direct to the point I raised a few posts back about the possibility of Google using clicks for authoritative sites and affecting rankings. While the evidence is not conclusive, the main points are:

• Google admits it uses click data to check the quality of rankings, especially top sites
• From a simple study that was done, clicks seemed to affect rankings slightly
• From another simple study, Google appears to be using quality factors such as bounce rate tied through Google Analytics