bwnbwn - 6:24 pm on Oct 15, 2010 (gmt 0)
I had Comscore verified on several sites just to see how good the tracking really was. Using 3 counters one server side, statcounter, and GA. Comscore was still 40% off the mark on the low side. All 3 of the other tracking were within 10%. The numbers were so far off I had to take the tracking off the sites. I left them on the sites for a year.
I have no faith at all in Comescore numbers and put them in the same leage as Alexa