I use to use statscounter but i fund
Tracewatch you need to install it on your own sever and it is way better then any free counter and it is also free
The info you get by stats counter is ok but it is only for the last 100 page loads and this will give you far more info of what your traffic is doing on your site
And for counters that have a image on your page i consider then a traffic leak and maybe more people are looking at it the same way i do