Does google track you visitors?

I'm wondering if the quality of your traffic has any effect on rankings. In other words, does google know the difference between a site where most visitors stay for more than five minutes one where most visitors quickly leave?

 

i think they do...

 

Google knows all. SShhh, they may be listening.

 

google track who has clicked for which keywords. i think every click to your site is vote for having a better serp

 

Google track visitors and keep the details for six month in there database !

 

Google doesn't know who has visited your site unless they reached you via their engine, or you are telling them somehow (i.e. adsense).

If someone clicks on a static link on Site A to reach you, how would they know unless they had access to that site or yours?

 

if they do tack visitors, that should be illegal. hmmm