I've noticed a problem lately where a lot of my traffic is showing as 00:00:00 for the avg time on site. I've done some reading and it turns out this happens when someone bounces off your site.
The problem is they could sit on your homepage for 20 minutes reading what they want, then hit the back button and it counts as a bounce and reflects as 00:00:00.
Here's the source: Average Time On Site 00:00:00 In Google Analytics? | Build And Earn
I'm sure your bounce rate gives Google all sorts of info you don't want them to know and can effect your SERPs.
So the question is does anyone know any other free tools? I know Statcounter is good, but they only allow 500 hits to be logged at once I think.