ALL sites on the internet are tracked by such outfits. That page you showed is really only the GBO Home Page. The first site listed in the one where folks who visit it also visit is the Forums which is where most of the activity here takes place.
Click on it and you can see what they think the stats are for our forums.
I have to wonder what the rank info is comparing to tho. It gives our forums a rank of 39,111 and the Home Page a rank of 107,308. Since both are really the same site just two sides of it I wonder what the rank would be if they recognized that fact.
Once a long time ago Matt looked at some major ranking site which ranks all billion or so sites on the internet. We were in the top million back then meaning we were in the top one tenth of a percent above 99.9% of all sites on the internet if my math is right.
