Originally Posted by Dirty Franck

Something called "by session" and it results in per unique hit i believe. Not exactly clear to me. I just know the ratios will look way better than they are because i have the feeling 1/3rd of your traffic is not counted.

Dont get me wrong, NOT accusing them of shaving, i just think their traffic system could be more detailed and show raws instead. Or just show the traffic you send.